But the pregnant E! star wasn't the only big name at the bash.
Read on for who we spotted inside the party and what kind of fun all the celebs got into.
Date Night: There were lots of celeb couples at last night's bash. Nina Dobrev and Ian Somerhalder were inseparable all night, while Emma Roberts and Evan Peters walked the carpet hand-in-hand. Chelsea Handler and Andre Balazs, Nicole Richie and Joel Madden, Kelly Osbourne and Matthew Mosshart and Anna Paquin and Stephen Moyer were all also there.
Oscar Picks: Elton's Oscar fave flick was Amour. "It's the best acting, the best movie," he told us. "I absolutely loved Argo," Spice Girl Melanie Brown told us of her favorite. Nina Dobrev also picked Argo as her top film of the year. As for Nicki Minaj's fave movie? "My favorite movie of the year?" she said, "I haven't seen any yet!"
Menu: Guests dined on Gordon Ramsay-created meals including Dungeness crab cakes, cauliflower and celery soup, red wine braised beef, snapper, roasted beet salad and sticky toffee pudding.
Girls Night: The Kardashian sisters left their men at home. Kim, Khloé and Kourtney all hung out together at their table without Kanye West, Lamar Odom or Scott Disick. Miley Cyrus hit the bash sans Liam Hemsworth, instead bringing her mom Tish as her date.
Money Maker: During the auction portion of the night, Elton raised $6 million to benefit his AIDS foundation!
Performer: British breakout songstress Emeli Sande was the night's headliner. She performed for partygoers who danced and cheered to her tunes in the dining room post dinner.
Star-Studded: Other stars at Elton's Oscar party included Britney Spears, Jim Carrey, Randy Jackson, Heidi Klum, Naomi Campbell, Mena Suvari, Andrew Rannalls, Carmen Electra, Jane Lynch, Matthew Morrison, Ryan Kwanten, Steven Tyler and Wilmer Valderrama.