Must-See Star Sightings: September 2017

Decked out in a rocker tee and shimmering gold bell-bottoms, Cyrus belted out a tune while performing with Billy Joel at New York City's Madison Square Garden on Sept. 30.

The leggy lady stunned at the premiere of Dyson during the 13th Zurich Film Festival in Switzerland on Sept. 30.

The Mr. Robot star had a chuckle on the red carpet at the 65th San Sebastian Film Festival's closing gala in Spain on Sept. 30.

The mom of three rocked the perfect fall outfit in Los Angeles on Sept. 30.

The "Fetish" singer bundled up in a cozy-looking cardigan as she headed out with some friends in New York City on Sept. 29.

All eyes were on the gorgeous model siblings at the "Her Time" Omega event during Paris Fashion Week on Sept. 29.

The "Sorry Not Sorry" singer slayed in an olive green tube dress with silver faux belt accents at her Tell Me You Love Me album release party at the High Line in New York City on Sept. 28.

Still so in love! The happy couple only had eyes for each other when they attended the New York City Ballet's 2017 Fall Fashion Gala at Lincoln Center on Sept. 28.

Ozzy planted a kiss on his wife at the Billy Morrison - Aude Somnia Solo Exhibition in Los Angeles on Sept. 28.

The Brazilian model sparkled at the L'Oreal X Balmain Party during Paris Fashion Week on Sept. 28.

It was a jungle out there for the actresses, who stuck with the theme at the Leopard Leopard Leopard Pop-Up Shop hosted by Kate Spade New York and Man Repeller in New York City on Sept. 28.

The "Love Is Blind" singer made a striking appearance at the Rick Owens show during Paris Fashion Week on Sept. 28.

The brothers battled the sun, squinting through a photocall for The Disaster Artist during the 65th San Sebastian International Film Festival in Spain on Sept. 28.

The in-demand model looked sleek in a white jumpsuit with gold buttons, which she paired with a white handbag and yellow accessories as she left her Paris hotel room on Sept. 28.

The mom of three donned a sexy low-cut leather top with high-waisted faded black jeans and patent boots while out in Paris, France, on Sept. 28 with boyfriend Younes Bendjima (not pictured).

The 20-year-old model rocked a bold, striped streetwear look while out and about in France during Paris Fashion Week on Sept. 27.

The 70-year-old actor brought his daughter -- a comedy writer in her own right -- with him to the season nine premiere of Curb Your Enthusiasm at the SVA Theater in New York City on Sept. 27.

The actress-turned-fashion designer looked pretty in a floral-print navy blue dress as she stopped by Nordstrom South Coast Plaza in Costa Mesa, California, to celebrate Draper James' fall collection on Sept. 27.

The Flatliners co-stars hammed it up at their film premiere's after-party at Clifton's Cafeteria in Los Angeles on Sept. 27.

The Great News star got a bright start to her day, shining in a pretty yellow dress and snow leopard-print coat as she made her way into the Today show set on Sept. 26.

The statuesque model showed off her long legs in a very French look while in the City of Light for Paris Fashion Week on Sept. 27.

Here's looking at you, kid! The affable royal had a grand ol' time at the Cycling Criterium time trial during the 2017 Invictus Games 2017 in Toronto, Canada, on Sept. 27.

We can't get enough of the intricate silk corsage Swarovski dress by Rosie Assoulin that Moore wore to the season two premiere party for her hit drama, This Is Us, in Los Angeles on Sept. 26.

The world's highest-paid TV actress showed off her famous curves outside The Late Show With Stephen Colbert's New York City set on Sept. 26.

The 22-year-old model was mad for plaid (and midriffs!) while presenting her TommyXGigi Collection in Barcelona, Spain, on Sept. 26.

The "Sorry Not Sorry" singer rocked an LBD with a sexy peekaboo cut-out and asymmetrical hemline and black cage sandals while out in London, England, on Sept. 26.

Right back at ya, Kate! The 38-year-old actress paid a visit to her Fabletics store in Torrance, California, on Sept. 26. 

Hands up! Clad in an AllSaints leather biker jacket, black shirt and jeans, The Mountain Between Us star excitedly greeted fans outside of the Good Morning America set in New York City on Sept. 26.

The 30 Seconds to Mars frontman was a clash of colors at a WSJ Tastemaker special screening of his new film, Blade Runner 2049, in New York City on Sept. 26.

The "Bodak Yellow" rapper took in the sights at Airbnb's New York City Experiences launch event in Brooklyn on Sept. 26.

The iconic actors sat together at the premiere of Spielberg at Paramount Studios in Hollywood on Sept. 26.

The YouTube stars were in their element at the 2017 Streamy Awards, held at The Beverly Hilton Hotel in Beverly Hills on Sept. 26. It was a big night for the BFFs, too -- Mamrie took home the Acting in a Comedy award for her role in the trio's film, Dirty 30.

What time is it? Milo Time! The This Is Us star helped present the We Are TIMEX Fall 2017 collection in New York City on Sept. 25.

Gomez donned a baby blue ensemble, round sunglasses and strappy brick red heels as she left an apartment building in New York City on Sept. 25.

Lookin' good, Em! Ratajkowski struck a pose on the steps at the Jacquemus show during Paris Fashion Week on Sept. 25.

The Quantico star touched down at LAX airport in an olive green bomber, white tank, distressed boyfriend jeans, black sneakers and oversized sunnies on Sept. 25.

The formidable rapper donned a casual white tee, matching kicks, black pants and a baseball cap as he made his way into Carbone in New York City on Sept. 25.

The Last Man on Earth co-stars cleaned up quite nicely for Fox's Fall Party at Catch LA in West Hollywood on Sept. 25.

The mother-daughter duo hit the streets of Paris, France, on Sept. 25.

The brunette beauty got her final touchups with John Frieda Hair Care as she prepped for the So You Think You Can Dance finale on Sept. 25.

The newlywed was anything but mellow yellow as she met up with friends at Alfred Coffee in Los Angeles on Sept. 25.

The 47-year-old actress celebrated her fall cover of DuJour magazine at The Magic Hour at Moxy Times Square in New York City on Sept. 25.

The Desperate Housewives alum donned a shimmery olive green dress, dark brown sandals, round shades, hoops and a snake-print crossbody bag for a trip to her Beverly Hills nail salon on Sept. 25.

Clad in a form-fitting forest green gown, Bundchen flashed the peace sign at the Green Carpet Fashion Awards Italia 2017 during Milan Fashion Week on Sept. 24.

The formidable producer let his tie-dye tee do plenty of talking while performing with The Roots at A Concert for Charlottesville at the University of Virginia on Sept. 24.

The cast of the new My Little Pony the Movie was delightfully upbeat at the film's New York City premiere on Sept. 24. MLP hits theaters Oct. 6.

The "Malibu" singer donned a very sheer white-and-red ensemble while backstage at the 2017 iHeartRadio Music Festival in Las Vegas on Sept. 23.

Joined onstage by DJ Khaled, Travis Scott, Chance the Rapper and Quavo, the Texas native put on a stellar performance at the iHeartRadio Music Festival on Sept. 23.

The 30-year-old singer had a laugh on the red carpet at the iHeartRadio Music Festival. Her opening set on the second night included her first-ever performance with Macklemore of their new song, "Good Old Days," and she ended her set with her hit, "Praying," telling the crowd, "This song is not an easy song for me. It's a very very special and emotional song." 

The "Dangerous Woman" singer celebrated the global launch of Reebok x Ariana Grande in Hong Kong, and joined in on a dance class with Brian and Scott Nicholson, her choreographer and creative director.

It was impossible not to take notice of N'yongo at the 2017 Global Citizen Festival in New York City's Central Park on Sept. 23 -- not only did she speak onstage with Freida Pinto, she rocked that awesome metallic magenta bomber jacket!

Cheers! Spacey raised a stein to good times during Oktoberfest at Theresienwiese in Munich, Germany, on Sept. 23.

The gang's all here! The Will & Grace crew was clearly excited to be back together during the second day of the Tribeca TV Festival on Sept. 23, where they treated fans to a surprise screening of the first episode of the revival season.

The 38-year-old actress accessorized her buzz cut with a bold striped look while out and about in New York City on Sept. 23.

We're not sure if it was the performance or his ensemble -- an argyle suit, semi-sheer patterned white shirt and ascot -- but either way, Styles got the audience fired up during the first night of the 2017 iHeartRadio Music Festival in Las Vegas on Sept. 22.

Underwood made a surprise appearance to help McEntire celebrate the 40th anniversary of her Grand Ole Opry debut at the iconic Nashville venue on Sept. 22. "It was a lot of fun. It was nerve-wracking; it was scary," the country music icon said onstage during the celebration. "This means the world to me. It's been a wonderful 40 years. I couldn't have done it without you, and I wouldn't have wanted to!"

The fashion designer tucked a sheer baby blue button-down into a navy blue tiered skirt for a live Instagram video of her new collection at the VB Dover Street Store in London, England, on Sept. 22.

The "You Already Know" singer took the stage for Today's Citi Concert Series on TODAY at Rockefeller Plaza in New York City on Sept. 22.

The 51-year-old supermodel flashed a smile while in Italy on Sept. 22 for Milan Fashion Week, where her daughter has been slaying her runway appearances. 

The Oscar-winning actress looked lovely in one of the biggest trends of the Emmys -- a deeply plunging neckline - at the San Sebastian Film Festival premiere of Submergence in Spain on Sept. 22.

The 16-year-old model has been taking the catwalks by storm in her first runway season, and her sunny turn in Versace's Milan Fashion Week show on Sept. 22 was no exception. Check out all of her runway walks here.

The "Work" singer blew a kiss to the cameras at the Fenty Beauty by Rihanna launch party, hosted by Sephora, in Paris, France, on Sept. 21.

The 36-year-old actor bonded with Jeff Bauman, whom he portrays in the new film about the Boston Marathon bombing, Stronger, at a special screening of the movie hosted by Los Angeles Mayor Eric Garcetti at the WME Screening Room on Sept. 21.

The morning talk show host glistened in a sequined long-sleeved LBD when she stopped by pal Andy Cohen's Bravo show, Watch What Happens Live, on Sept. 21.

Gomez was all smiles as she sipped on iced tea while on set of her new Woody Allen movie in New York City on Sept. 21.

Witherspoon was feeling the '80s vibes at a special screening of Home Again at the Washington Mayfair Hotel in London, England, on Sept. 21.

The 20-year-old model looked lovely in a bold green patterned strapless dress at the amfAR Gala Milano in Milan, Italy, on Sept. 21.

Ready for fall! The sweater-clad actress flashed a smile while in London on Sept. 21.

We know the "You Already Know" singer looked ah-may-zing in a long-sleeved, sparkly black mini at the premiere of her new visual album, Double Dutchess: Seeing Double, at iPic Theatres in New York City on Sept. 20.

The country singers hit the stage together at the VetsAid Charity Benefit Concert in Fairfax, Virginia, on Sept. 20.

The 50 Shades Darker star struck a fashionable pose at the Gucci show during Milan Fashion Week on Sept. 20.

Duplass held on tight to his wife and former The League co-star at the premiere of Netflix's Big Mouth at Break Room 86 in Los Angeles on Sept. 20.

The mom of three made athleisure wear look oh-so-good while running errands in Studio City, California, on Sept. 20.

Kloss took home the gold during Milan Fashion Week, sparkling on the runway of the Alberta Ferretti show on Sept. 20. 

The mom of two was still rocking her bob as she headed to her car in Los Angeles on Sept. 20. Kunis looked casual cool in a red-and-white striped long sleeve shirt, True Religion jeans and red ballet flats.
 

Queen Bey looked quite happy after watching a performance of Aladdin on Broadway on Sept. 19.

The blonde beauty was all ears while onstage during the Academy of Motion Picture Arts & Sciences' screening of her new film, Battle of the Sexes, at the Museum of Modern Art in New York City on Sept. 19.

The former supermodel rocked a sexy sheer LBD for America's Got Talent's live finale show on Sept. 19.

J.Lo's smoldering turn at the World of Dance party at Delilah in West Hollywood, California, on Sept. 19 left us feeling anything but blue.

The action star stood tall during a photocall for Blade Runner 2049 in Madrid, Spain, on Sept. 19.

A little rain didn't get Stone down as she made her way onto The Late Show With Stephen Colbert set in New York City on Sept. 19 while holding a copy of Hillary Rodham Clinton's new tome, What Happened.

The 25-year-old actress got caught in the rain while on the Big Apple set of her Woody Allen film on Sept. 19.

What about Bob? Tisdale rocked an all-black ensemble that included a ripped vintage bomber after her workout in Studio City, California, on Sept. 19.

The 37-year-old actress rocked a tiger-adorned cropped sweatshirt, suede teal pants and matching pumps while promoting her new film, The LEGO Ninjago Movie, at the SiriusXM Studios in New York City on Sept. 19.

Does it get more super than this? The model icons embraced at Fashion 4 Development's 7th Annual First Ladies Luncheon at New York City's Pierre Hotel on Sept. 19.

The 19-year-old actor and his girlfriend, Odessa Adlon, made for a dashing duo at the Goalkeepers Global Goals Awards, which honored outstanding individuals accelerating progress towards the United Nations' global goals, in New York City on Sept. 19.

It was a family affair at the Tommy Hilfiger TOMMYNOW runway show during London Fashion Week on Sept. 19.

The lovely couple stepped out for the 27th Annual Simply Shakespeare Benefit in Los Angeles on Sept. 18.

The Beatriz at Dinner star rocked a fierce cropped red leather jacket and silver sequined pencil skirt with matching pointy pumps to the Christopher Kane show during London Fashion Week on Sept. 18.

The philanthropists bonded at Global Citizen Live! in New York City on Sept. 18. Inside the event, Jackson announced that she was now an ambassador for her late godmother's non-profit, the Elizabeth Taylor AIDS Foundation, and Lennox received the George Harrison Global Citizen Award for her career-long excellence in music and activism.

The British singer struck a sultry pose at the LOVE magazine x Miu Miu party at Loulou's in London, England, on Sept. 18.

The morning after the 2017 Emmys, Witherspoon jetted out of LAX airport with her daughter, Ava. The Big Little Lies star, who was clad in a bright red jacket and black pants, even stopped to sign autographs for fans.

Plaid makes perfect! The Fuller House star put her best foot forward for the AOL Build Speaker Series in New York City on Sept. 18.

The dancer-turned-actress stayed hydrated at the 2017 Emmys with a bottle of FIJI Water. Check out even more red carpet arrivals from the awards show on Sept. 17 here.

The Emmy winners celebrated their new statuettes at the Canadian Emmy nominees celebration at the Official Residence of Canada in Los Angeles on Sept. 18.

The Destiny's Child singer was on a silver streak at VH1 Hip Hop Honors: The 90s Game Changers, which took place at Paramount Studios in Los Angeles on Sept. 17.

In real life, there's no bad blood between these Scandal co-stars! The duo sweetly posed on the red carpet at the 6th Annual Women Making History Awards at the Beverly Hilton Hotel in Beverly Hills on Sept. 16.

Stone buddied up to King, whom she portrays in Battle Of The Sexes, at an after-party in Westwood, California, following the film's premiere on Sept. 16.

The mom of two had something to say about disco while out and about in New York City on Sept. 15.

The 35-year-old actress stunned in a belted purple dress at the Glamour x Tory Burch Women To Watch Lunch in Beverly Hills, California, on Sept. 15.

The Hamilton creator, seen with with Ana Villafañe, kicked off Hispanic Heritage Month at Viva Broadway in New York City on Sept. 15. "The goal of Viva Broadway is to bring more Latino families to theater," he told ET.  

The "Find You" singer made himself at home when he visited Radio Disney on Sept. 15.

The Australian model brightened up the streets of New York City while promoting her KORA Organics beauty line in Times Square on Sept. 15.

Paltrow glowed at an event for Goop's capsule collection collaboration with Christian Louboutin in Los Angeles on Sept. 14.

The Shameless star flashed a wide smile as she left dinner at Catch LA in West Hollywood, California, on Sept. 14.

The model-actress stunned in a cleavage-baring black jumpsuit with gold buttons at Rihanna's 3rd Annual Clara Lionel Foundation Diamond Ball in New York City on Sept. 14.

The 36-year-old actor looked as dapper as ever at the Stronger premiere in New York City on Sept. 14.

Munn got "handsy" in a whimsical pale pink dress and nude Francesco Russo ankle-strap sandals at the Lego Ninjago photocall, appropriately held at Legoland in Carlsbad, California, on Sept. 14.

The Orange Is the New Black star looked pretty in pink at The Hollywood Reporter and SAG-AFTRA Inaugural Emmy Nominees Night, presented by American Airlines, Breguet and Dacor, at the Waldorf Astoria Beverly Hills on Sept. 14. Check out even more fun Emmys party pics here.

Jolie, the Special Envoy to the United Nations High Commissioner for Refugees, looked happy to serve during her visit to the United Nations in New York City on Sept. 14. 

But first, two coffees! Hudgens grabbed two iced beverages to go from Alfred Coffee in Studio City, California, on Sept. 14.

Halsey isn't quite living up to her song, "Bad at Love"! The New Jersey native cozied up to her beau at the V 109 launch party in New York City on Sept. 13.

The blonde buddies made a striking duo at an after-party following the Mother! premiere in New York City on Sept. 13.

Fashion emergency? We don't think so, but that's still what Beckham's T-shirt claimed as she stepped out in New York City during New York Fashion Week on Sept. 13.

The "Fetish" singer topped a black ensemble with a bold red star-covered bomber for a Coach meet and greet in New York City on Sept. 13. She paired the sporty jacket with a matching lip and finished off her look with a wet hair-styled 'do.

RiRi loves her denim! The "Bad Habit" singer donned a patchwork coat and fuzzy periwinkle sandals while out in New York City on Sept. 13. She paired the quirky look with mega hoops, a boxy cheetah-print handbag and oval-shaped sunglasses.

The former Real Housewives of Beverly Hills star posed with her model children at the signing of her book, Believe Me: My Battle with the Invisible Disability of Lyme Disease, at Barnes & Noble Tribeca in New York City on Sept. 13.

McCarthy looked as fabulous as ever while celebrating the launch of her new vodka cocktail line, Blondies, with a luncheon at Bar SixtyFive at the Rainbow Room in New York City on Sept. 13, which her husband, Donnie Wahlberg, also attended.

The Texas native had a laugh while performing on the Elvis Duran Z100 Morning Show in New York City on Sept. 13.

The model mom flashed a shy smile as she left husband John Legend's concert at O2 in London, England, on Sept.12.

The philanthropic actresses were just two of many stars who came out to support Hand in Hand: A Benefit for Hurricane Relief at Universal Studios AMC on Sept. 12. The hour-long telethon featured celebs in various cities across the country and raised millions of dollars for those affected by Harvey and Irma.

The Biebs held court amongst his fellow A-listers during the Hand in Hand telethon on Sept. 12.

The married duo made the red carpet their date night at the Film Stars Don't Die in Liverpool premiere at the Toronto International Film Festival on Sept. 12.

The Rachels stuck close together during an intimate rooftop gathering discussing the story behind their film, Disobedience, at the Grey Goose Cocktails & Conversation event during the Toronto International Film Festival on Sept. 12.

The recently engaged couple looked picture perfect at the Badgley Mischka runway show during New York Fashion Week on Sept. 12. 

Talk about a sweet ride! Dawson checked out the Absolut Elyx Copper Cab during New York Fashion Weekend Sept. 12.

Roberts brightened up the streets of Manhattan as she made her way into Coach's New York Fashion Week show on Sept. 12.

The stunning models got in some sister time backstage at the Anna Sui show during NYFW on Sept. 11.

The "Fade" music video star struck a silly pose while at the Moët & Chandon x Public School New York Fashion Week launch party at Fulton Market on Sept. 10. Travis Scott, Diplo and Halsey were also among the celebrities in attendance for the unveiling of three limited-edition bottles of Moët Nectar Impérial Rosé.

The This Is Us star -- who stopped to pose in the Sorel lounge -- spoke to 1,000 women at the Create & Cultivate women's empowerment conference in Seattle, Washington, on Sept. 9, giving hints about the upcoming second season of her hit NBC drama and reminiscing about her first-ever Hollywood audition for The Princess Diaries.

The co-stars posed with costumes from their Hulu sitcom, The Mindy Project, when it was honored at the Paley Center for Media's 11th Annual PaleyFest Fall TV Previews in Beverly Hills on Sept. 8.

The fab four! The celebrity judges introduced the Project Runway fashion show during New York Fashion Week on Sept. 8.

The 21-year old model rocked a seriously '90s look -- an oversized beige blazer, cobalt blue tee tucked into distressed light-wash denim, black boots and a graffiti-covered Balenciaga bag -- as she left the Bowery Hotel in New York City on Sept. 6.

The husband-and-wife duo made a stunning entrance into the Loving Pablo screening at the 74th Venice Film Festival on Sept. 6.

The 54-year-old actress brought her sunny disposition -- and dress! -- to a gallery event in Los Angeles on Sept. 6. Moore was joined at the event by her daughters, Scout and Talullah Willis, and guests were able to enjoy the photography as well as Casamigos cocktails.

The Twin Peaks star got flirty in feathers for the opening ceremony of the 43rd Deauville American Film Festival in France on Sept. 1. 

The 90210 stars were joined by their daughters, Stella McDermott and Lola Ray Facinelli, for the Project MC2 Part 5 Netflix Premiere at the London Hotel in West Hollywood on Sept. 7. Garth had the special honor of hosting the premiere of the series, which aims to show girls that it's cool to be into science and tech.

The German actress showed off her crazy long gams in a playful patterned mini at the European Filmmakers Lunch during the Venice Film Festival in Italy on Sept. 6.

The mom of three was as bright as sunshine at the NYC premiere of Home Again, co-hosted by Lindt Chocolate and Cinema, on Sept. 6. Afterwards, guests made their way to the Skylark for cocktails, bites and plenty of Lindt LINDOR red milk chocolate truffles.

Roberts' famous smile was on display as she sat front row at the Calzedonia Legs Show in Verona, Italy, on Sept. 5.

Alba -- who rocked a flowy black dress over her baby bump -- was sandwiched by her two gorgeous friends, who wore the same pattern from Zoe's line. The trio was together for a presentation of the fashion designer's Spring/Summer '18 collection in Los Angeles on Sept. 5.

Why, yes, we will take two tickets to this gun show. Elba flexed his muscles at the GQ Men of the Year Awards after-party at the Tate Modern in London, England, on Sept. 5.

The "Sorry Not Sorry" singer waved to fans outside of Good Morning America's NYC set on Sept. 5.

The Woodstock star walked the red carpet at the 74th Venice Film Festival on Sept. 4 in a ruffled chiffon polka dot dress that featured a floral embellishment at the waist. 

Peace, love and Jourdan! The British model rocked an on-trend fall look while out in London on Sept. 4, including a studded mini backpack from her collaboration with Michael Kors.

The athleisure-clad actress was all smiles while out and about in Los Angeles on Labor Day.

Who says you can't wear white on Labor Day? Gomez rocked the hue head-to-toe as she went on a juice run in New York City's West Village on Sept. 4.

What a day for the royal family! Harry met with young soccer players during a Coach Core training session at the Manchester City Football Club on Sept. 4, the same morning Kensington Palace announced that Kate Middleton and Prince William were expecting their third child.

We're green with envy! Lorde flashed a smile to fans during her performance at the iHeartRadio Beach Ball Summer Concert event in Vancouver, British Columbia, on Sept. 3.

Just hanging around! Stone got up close and personal with her fans at the Telluride Film Festival 2017 in Colorado on Sept. 2.

The A-list duo also met up at the film festival in Telluride, Colorado.

Will anything make your day quite like seeing Clooney on a boat? No, no it will not. The new dad hopped aboard the sweet ride to leave the Hotel Excelsior during the 74th Venice International Film Festival in Italy on Sept. 1.

Clooney's pal gave fans a wave at the same fest.

It's sweater weather already! Timberlake rocked a brick red cardigan over a Pink Floyd tee and distressed denim while out in New York City on Sept. 1.

Sevigny isn't ready to let go of the summer! The 42-year-old actress showed off her long legs in a red-and-white checkered jumper at a photocall for her new movie, Lean on Pete, during the Venice Film Festival on Sept. 1.