Whether they're rocking red carpets or strutting their stylish stuff on the streets, we can't get enough of these stars' fashion statements. Click through the gallery to see the best looks this month.
The Shameless star struck a fierce pose in her ruffle-sleeved, structured black Jonathan Cohen dress and matching ankle-strap heels at the For Your Consideration event for her hit Showtime drama in Los Angeles.
Mother Monster gave off major '50s pin-up vibes in a gorgeous white tulle dress with a subtle polka dot overlay, black slingback pumps and cat-eye sunglasses while out in New York City on May 24.
The 26-year-old actress truly shined in an eye-catching, full-length silver Rochas gown at the Adrift premiere in Los Angeles.
The Stranger Things star paired a sleeveless collared, artwork-adorned LBD with black loafers and a punchy bold yellow bag at the welcome dinner for the Christian Dior Couture S/S 2019 Cruise Collection in Paris, France.
What a pairing! The Ocean's 8 star topped a pretty floral Michael Kors dress with a short-sleeved linen trench, finishing off the look with pointy white heels as she left her New York City hotel on May 24.
Flowers, tulle and polka dots, oh my! Newton stepped out in a romantic red Rodarte dress for a special screening of Solo: A Star Wars Story at BFI Southbank in London, which celebrated the movie's BFI Film Academy trainees.
The Alienist star looked lovely in a powder blue midi-length halter ALEXACHUNG dress that was accented at the neck with a black bow and strappy black sandals at the For Your Consideration event for her TNT drama in Beverly Hills.
Hathaway brought a sunny '70s style to the streets of New York City as she made her way to the Late Night With Stephen Colbert set. Styled by Law Roach, the Ocean's 8 star looked as bright as her outfit, which included a patterned Anna Sui blouse, bright orange Rochas skirt, sunflower yellow Le Silla pumps and a matching tiny bag.
The 21-year-old model looked like a very chic biker babe at the Whitney Museum's 2018 Annual Gala and Studio Party, presented by Audi, at the Whitney Museum of American Art in New York City, walking the red carpet in a strapless leather Alex Perry LBD, strappy metallic Gucci sandals and Lorraine Schwartz jewels
Sandra Bullock and Cate Blanchett
We're green with envy over Bullock's one-shouldered lime Elie Saab jumpsuit and Blanchett's royal purple suede Salvatore Ferragamo suit from the co-star's appearance at an Ocean's 8 photocall at New York City's Metropolitan Museum of Art.
She makes the trends! RiRi looked too cool in an artistic white button-down Helmet Lang puppy shirt tucked into a double-waisted denim mini skirt, which she accessorized with embellished clear-and-white heels, Balenciaga banana belt bag and a gold necklace with a charm of Africa while out with friends in London's Mayfair neighborhood.
Holmes looked perfectly prim and proper in a baby blue floral boatneck Zac Posen dress and nude pumps at the 2018 American Ballet Theatre Spring Gala at New York City's Metropolitan Opera House.
The fashion designer made menswear look oh-so-good when she rocked this hunter green power suit with a white button-down, tan clutch, square sunglasses, platform heels and a long gold necklace while leaving her Dover Street store in London, England.
The Ocean's 8 star beamed while rocking a colorful, multi-patterned jumpsuit while out in New York City.
The street style star rocked a sultry emerald green velvet suit with a barely-there lace bodysuit to the 2018 American Ballet Theatre Spring Gala at New York City's Metropolitan Opera House. She accessorized with statement jewels like an eye-catching jaguar necklace and a box clutch.
The Jessica Jones star brought her fashion A-game to the For Your Consideration screening and panel at Netflix FYSee at Los Angeles' Raleigh Studios, pairing her white long-sleeved feather dress with matching pumps.
Accompanied by husband George Clooney, the human rights lawyer looked incredible at Prince Harry and Meghan Markle's wedding at Windsor Castle, looking as bright as the sunny English day in a saffron yellow Stella McCartney dress with a side drape detail and coordinating hat by Stephen Jones. George also looked quite dapper in a gray suit.
Abigail Spencer and Priyanka Chopra
Meghan Markle's pals looked fantastic at the now-royal's wedding to Prince Harry, with Spencer in a blue-and-white polka-dot dress by Alessandra Rich and a matching navy fascinator, while Chopra looked lovely in a custom lavender Vivienne Westwood suit and sharp-angled hat by Philip Treacy.
The queen of the blazer dress rocked an LBD version of her fave look at the 2018 Turner Upfronts at the Theater at Madison Square Garden in New York City.
Lady in red! Hosk slayed during the 71st Annual Cannes Film Festival, and especially so at the amfAR Gala Cannes 2018, where she paired this flowy, strapless Ermanno Scervino gown with matching wrap-up heels, a diamond necklace and a dark crimson lip.
We're all about this fabulous floral frock by Dolce&Gabbana and the bright pink pumps Nyong'o wore for a visit to the SiriusXM Studios in New York City.
Pulling off this many trends at once is tough -- unless you're Hadid. The California native's '90s-inspired street style look in Cannes, France, consisted of a white Fleur du Mal cut-out bodysuit, distressed mom jeans with a white stripe down the side, strappy silver Off White C/O Jimmy Choo heels and a tiny Christian Dior logo bag.
Does she ever not look fierce? J.Lo defied the laws of gravity at the Robin Hood Foundation's 2018 Benefit in New York CIty in a long-sleeved, full-length black dress that featured subtle floral embellishments and a waist-high (yes, really) slit.
The iconic model looked amazing in a futuristic charcoal gray gown by Poiret and black slanted heels at the BlacKkKlansman screening during the 71st Annual Cannes Film Festival.
Lively stepped out to support her hubby, Ryan Reynolds, at the Deadpool 2 premiere in New York City in a sequined Brandon Maxwell number that was a play on Deadpool's costume, and It. Is. Everything.
The Atlanta star gave off major '70s vibes in this bold floral Valentino maxi dress at the Deadpool 2 premiere.
The Passage star looked super chic in this three-piece striped white suit, which included a blazer, crop top and wide-leg trousers, at the 2018 Fox upfronts in New York City's Central Park. She added a pop of color with a bold red lip and purse.
The jury president can't stop slaying the fashion game at Cannes, and this fantastic one-shouldered, bow-accented black Giorgio Armani gown was no exception. She finished off her look with Chopard gem earrings and a Repossi ring.
We can't get enough of this gorgeous, shimmering pale pink Prada gown that Nyong'o paired with Chopard jewels for the Chopard Secret Night party during the 71st Annual Cannes Film Festival.
So romantic! We love how Hadid styled the straps of this semi-sheer, fire engine red dress at the Dior dinner during the 71st Annual Cannes Film Festival, pairing the look with matching pointy pumps, a heart-adorned black striped mini bag and a diamond necklace. She finished off the look with her hair in a high, loose bun and a bold red lip.
The 22-year-old model was all about going sheer during the Cannes Film Festival, and that included this ethereal tulle couture number by Schiaparelli at the Girls of the Sun (Les Filles Du Soleil) screening.
The Ocean's 8 star looked incredible in a paint-by-numbers-inspired sleeveless Mary Katrantzou gown complete with a black belt and bubble skirt, which she paired with Chopard butterfly rings and gold cap toe clear Aquazzura heels at the Cold War (Zimna Wojna) screening at the Cannes Film Festival.
The brunette beauty wowed in a blush-colored, strapless custom Dior dress and plenty of diamond jewels at the Ash Is the Purest White (Jiang Hu Er Nv) screening during the 71st Annual Cannes Film Festival in France.
The Game of Thrones star bloomed in a gorgeous maroon floral Valentino gown and matching lip at the premiere of Disney Pictures and Lucasfilm's Solo: A Star Wars Story in Hollywood.
Now this is how you chicly wear a label right on your sleeve -- or, in this case, dress! The Modern Family star stunned at the Solo: A Star Wars Story premiere in a tiered Oscar de la Renta confection, black peep-toe heels, a Chanel bag and Lorraine Schwartz jewels, finishing off her sweet look with a middle part, smoky eye and bold red lip.
Who knew a sheer tulle look could be so out of this world? Newton donned this pupil-embroidered number by Dior Haute Couture that featured a woven black horsehair cage and silver circular adornments at the Solo: A Star Wars Story premiere.
The blonde bombshell brought the wow factor to the Sorry Angel premiere at the Cannes Film Festival in an exquisite Valentino silk ball gown that featured oversized floral print and a plunging neckline.
All eyes were on the stunning Oscar winner as she waltzed down the Cannes Film Festival red carpet in a couture white Dior creation that featured a corset top and feathered skirt at the Sorry Angel premiere.
The 21-year-old model put her best foot forward in a gray checkered mini, matching blazer with black trim and spiky pumps, all by Alexander Wang, at the Magnum VIP party at the Cannes Film Festival.
The Mom star was a total bombshell at the Overboard premiere in Mexico City, walking the blue carpet in a strapless black column gown with a sweetheart neckline and drop-down diamond earrings.
Summer ready! The 37-year-old supermodel looked red hot in a cherry-colored mini dress with matching heels while presenting Xti's new collection at the Santo Mauro Hotel in Madrid, Spain.
Stewart just can't stop slaying the fashion game at the famed festival, looking fabulous in a sparkly white Chanel piece at the fashion house's party with Vanity Fair France on the Club Costes by Albane rooftop at JW Marriott Cannes.
Moore looked flawless as she left the Martinez Hotel in France for the opening night gala of the 71st Annual Cannes Film Festival, strutting her stuff in a unique red Givenchy dress complete with cut-out shoulders and a feathered cape, which she accessorized with Chopard diamond drop earrings.
The Scandal star looked ready to party in a fun black mini with mirrored embellishments accenting the sleeveless cut, waist and skirt when she stepped out for the Bronx Children's Museum's 2nd Annual Gala at the Edison Ballroom in New York City. She accessorized with a black clutch and strappy silver heels, finishing off the look with her hair in a high bun and a smoky eye.
Anyone who claims matching your makeup to your outfit is a faux pas clearly needs to see Thompson work her magic. For the Fahrenheit 451 premiere in New York City, the Thor: Ragnarok star paired a black bralette-and-high panty set with a sheer silver polka dot-and-lace sheer, buttoned-up overlay, completing the look with a smoky silver-and-black eye, silver hoops, plenty of rings and a forest green bag.
The pretty burnt orange sleeveless dress that Alba wore to WSJ's the Future of Everything Festival in New York City had one very fun feature: a cape! The mom of three happily showed off the fun frock, which she wore with business-ready black pumps.
Romantic and ethereal only begin to describe the white, ruffle-accented Giambattista Valli gown that Fanning paired with gorgeous silver jewels for Tiffany & Co.'s Paper Flowers celebration and Believe in Dreams campaign launch in New York City.
While celebrating husband George Clooney's birthday, the fashionable lawyer donned a super chic black romper, amping up the look with a gold belt and clutch and strappy beige Jimmy Choo heels.
The 22-year-old model took a serious plunge in a sharp white blazer with a neckline cut down to her waist, which was paired with matching flared pants, orange Dorateymur mules, one slim gold chain and a bold red-orange lip when she joined her sisters and mom at an intimate dinner hosted by the Business of Fashion in New York City.
We had anything but the blues when the British singer stepped out for VH1's 3rd Annual Dear Mama: A Love Letter to Moms screening at the Theatre at Ace Hotel in Los Angeles in this cobalt blazer and flared pants look, which she paired with strappy silver platforms.
Kristen Stewart and Cate Blanchett
Stewart looked tres chic in a powder blue tweed Chanel suit with a simple white tank top. Meanwhile, the Carol star also opted for a pastel pink two-piece during the Cannes Jury photocall.
The I, Tonya star looked pretty in a black-and-white tiered frock at the Terminal premiere after-party at the Escape Hotel Hollywood, where SVEDKA Vodka cocktails were served.
The former Bond Girl dazzled in a custom silk Louis Vuitton creation that featured hundreds of crystals and beads at the Cannes Film Festival opening ceremony in France.
The actress stunned in a sparkly Versace plaid mini skirt, matching thigh-high boots and a white button-up on her way to a Met Gala after-party.
The Victorious alum oozed glamour at the Unbridled Eve Gala during the 144th Kentucky Derby, held at the Galt House Hotel & Suits in Louisville. Justice stunned in a pearl beaded Romona Keveža Collection gown with a boat neckline and low V back, which she paired with a classic red lip and loose waves parted to one side.
The former Glee leading lady looked stunning in a strapless silver-and-black gown at the 29th Annual GLAAD Media Awards at the Hilton Midtown in New York City. She added strappy black sandals and a braided updo to complete the look.
The This Is Us star looked sweet as could be in a patterned, one-shouldered N°21 frock and ankle-strap peep-toe heels while hosting the Garnier "Girls Night In" Party at the Hills Penthouse in West Hollywood.
We are not worthy! The Greatest Showman star exuded elegance and grace in a powder blue Dice Kayek creation that featured billowing sleeves and an oversized bow on the collar while attending the Tiffany & Co. Paper Flowers event and Believe in Dreams campaign launch in New York City.
Decked out in head-to-toe Chanel, the 28-year-old actress dazzled in a black blazer-inspired mini-dress and lace booties at the Chanel Cruise 2018/2019 Collection at Le Grand Palais in Paris, France.
The actress showed her sultry side in a black floral off-the-shoulder Brock Collection gown at VH1's third annual Dear Mama: A Love Letter to Moms event at the Ace Hotel in Los Angeles.
Showstopper! The Quantico leading lady wowed in a white Isabel Marant ruched frock with Off-White strappy heels while out and about in NYC.
The Keeping Up With the Kardashians star was dressed quite on point for the Longchamp Fifth Avenue Flagship opening in New York City.
J.Lo always delivers! The World of Dance judge slayed in a body-hugging white August Getty long-sleeve mini dress and matching Gianvito Rossi heels at the NBCUniversal Summer Press Day in Los Angeles.
The World of Dance host looked ravishing in red at NBCUniversal's Summer Press Day 2018 in Universal City, pairing a belted, tiered sleeveless Reem Acra dress with matching red Giuseppe Zanotti heels.
This gray deconstructed dress put a fun spin on the menswear-inspired trend as the Laguna Beach alum attended NBCUniversal's Summer Press Day 2018 at the Universal Studios Backlot.
The "Boyfriend" singer teamed a bold-shouldered maroon floral top with khaki-hued belted, high-waisted gauchos and nude-hued patterned heels for the same NBCUniversal Summer Press Day.
The "El Anillo" singer roared into the For Your Consideration event for World of Dance in North Hollywood, California, in a belted, turtleneck leopard-print crepe dress with exaggerated shoulder pads by Sergio Hudson, semi-sheer Christian Louboutin pumps and a black clutch. She pulled her hair back into a tight bun and completed the look with a smoky eye and nude lip.
The Quantico star looked perfectly casual in a cropped sunflower yellow Ganni top with navy blue accents, cuffed high-waisted Frame jeans, Fendi heels and itty bitty Vogue X Gigi sunglasses while out in New York City's Upper East Side neighborhood.
The Handmaid's Tale star wowed in a turquoise cape dress and matching pointy, ankle-strap heels at the Hulu Upfront 2018 Brunch at La Sirena in New York City.
The 62-year-old actress matched the blue carpet in an edgy grommet-adorned dress with a knee-high slit during the 4th Annual Bentonville Film Festival in Arkansas.
Not everyone can rock a daring off-the-runway look, but Union did that in spades when she donned this Marc Jacobs Fall/Winter 2018 look to a special screening of Breaking In in Hollywood.
The Modern Family star donned a strapless emerald green Rami Al Ali column gown with floral appliques for a special screening of Breaking In at ArcLight Cinemas in Hollywood.