Usher and Alicia Keys gave a killer performance at the Eighth Annual Keep a Child Alive's Black Ball, Amanda Hearst, Lauren Santo Domingo and Carolina Herrera attended the Apollo Circle Event at the Met, Karolina Kurkova graced the red black carpet at the DIA Art Foundation Gala, Zoe Kravitz and Jaime King dropped by the Juicy Couture Spring 2012 Preview and so much more.  Last night's parties were all about charity!

[Paul Oakenfold photo via Instagram] Between Zac Efron and his loyal army of skate rats at Spare Room and the fashion pioneers of Nightswim, we kind of figured Hollywood's adult celebrity version of Chuck E. Cheese known as The Roosevelt had already gone as mutant-friendly as possible. But based on last night's blowout party in honor of the DVD release of X-Men: First Class, which featured a massive 3D projection of clips and characters from the movie on the side of the building and Paul Oakenfold spinning at Teddy's, it seems we spoke too soon. More»

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L.A. isn't exactly known for its crisp, clean-cut style or embracing preppiness, unless we're being ironic about it. It's almost as if dressing up for a night out is a competition in who can look like they care less.  But now that the hallmark of prep crocadilly has decided to street up his vibe a bit, L.A. can get down with him. Especially when he throws parties like last night's Lacoste L!VE event presented by Interview Magazine at Lexington Social House. More»

[Perez Hilton flashes the pink carpet. Photos via Getty]

Celeb gossip blogger, Perez Hilton celebrated his 31st Birthday this Saturday at the legendary Viper Room on Sunset Blvd with the real Paris Hilton along with Christina Aguilera (surprise performer), the Jonas Brothers (who brought out his cake), and guests including Amanda Bynes, Ashley Tisdale, Aubrey O'Day, Brittany Snow, Brittney Gastineau, Christina Aguilera, (more story and photos below)... More»