Parties! The style, stars and scoop from Hollywood's hottest events

"Everybody's chilling and having a good time," said tennis ace Serena Williams, who congratulated Takashi Murakami on the opening of his mid-career retrospective. Among those guests enjoying themselves was Owen Wilson, who slipped in just in time to greet his Darjeeling Limited co-star, Anjelica Huston (not pictured) and catch the end of Kanye West's high-energy set.