Stars Goof-Off at the Academy Awards Governor's Ball

After stressing all night over whether or not they'd take home the Oscar, Sandra Bullock and Kathryn Bigelow let loose at the 82nd Annual Academy Awards Governor's Ball in Hollywood on Sunday and showed off their big wins! But they weren't the only celebs who were celebrating!

OK! GALLERY: HOT HOLLYWOOD COUPLES PARADE THEIR LOVE AT VANITY FAIR PARTY

Oscar winners, nominees, presenters and attendees partied it up at the Governor's Ball and released all of their pent-up anxiety!

Gabourey Sidibe, Oprah Winfrey, Meryl Streep, Maggie Gyllenhaal, Carey Mulligan, Mo'Nique, Christoph Waltz and Quentin Tarantino were just a few of the many stars to relax and enjoy the party!

OK! GALLERY: STARS VAMP IT UP FOR VANITY FAIR OSCAR SOIREE