Style Watch | Louis Vuitton Party

From Top: Jessica Chastain, Freida Pinto, Emma Stone, Emma Roberts, Ashley Greene all in Louis Vuitton

Kanye West

Emma Roberts

Lady Gaga

Nas

T. R. Knight and Mark Cornelsen

Usher

Lauren Conrad

John Mayer

Jessica and Ashlee Simpson

Eddie Cibrian and LeAnn Rimes

Paris Nicky Hilton

Hollywood's "IT" Restaurant- Katsuya Hollywood