How The Stars Rang in 2013

After a grueling season of sparring with Simon Cowell, The X Factor judge got some much needed R&R at the Four Seasons Punta Mita in Mexico over New Year's.

Along with Russell Simmons, Eddie Murphy, Guy Oseary and Ne-Yo, Sean Combs celebated New Years with his kids and Ciroc Vodka at Sea.

Jeff Goldblum performed live with his Mildred Snitzer Orchestra jazz band at at Crustacean Beverly Hills.

Supermodel Cindy Crawford shared a photo from her sexy photo shoot with Terry Richardson, tweeting: "Happy New Year! We're popping champagne tonight although it probably won't be as fun as this shoot with @Terry_World"

One day after announcing her pregnancy, Kim Kardashian hosted the New Year's party at 1 OAK nightclub at the Mirage Resort and Casino in Las Vegas alongside baby daddy Kanye West.

VIDEO -  Kim Talks Baby News With ET

Kim, who also celebrated with Kris Jenner and Lance Bass, told ET exclusively that pregnancy is much harder than she anticipated, so she's been taking a lot of naps.

Blue Ivy's mom spent NYE performing at a private concert at The Wynn Hotel in Las Vegas. Click here to watch her perform Irreplaceable, click here to watch her countdown to midnight and celebrate with a Destiny's Child medley!

Across the country, Beyonce's hubby performed a concert at Brooklyn's Barclays Center with Coldplay. At midnight, Gwyneth Paltrow, Apple and Moses joined dad on stage to sing in the New Year. Later, the adults continued the party in the D'usse Lounge backstage. 

Along with Jake Gyllenhaal and Harry Styles, the Your Body singer caught Jay-Z and Coldplay's Barclays Center concert. 

The Modern Family star was busting at the seams while celebrating New Year's Eve at Delano's poolside bash in Miami.

American Idol's new judge celebrated -- and performed Moment 4 Life and Starships -- at Angel Management Group's PURE Nightclub located inside Caesars Palace.

The Grammy-winner performed two songs (I Knew You Were Trouble and We Are Never Ever Getting Back Together) on ABC's New Year's Rocking Eve. 

The Olympian counted down to midnight at Las Vegas nightspot Hyde Bellagio. 

Joining Lochte at Hyde Bellagio were Hilary and Haylie Duff. 

The Avatar star rang in New Years at CATCH & SL Miami at The James Royal Palm with the Miami Heat's Chris Bosh and Dwayne Wade, along with their significant others Adrienne Bosh and Gabrielle Union.

Jeremy Piven and Common pose as they ring in the New Year at Hyde Bellagio in Las Vegas.