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

"Come on, you know why I’m out here tonight!" said a coy John Mayer at the premiere of Marley & Me. Though Mayer stayed mum about rumored girlfriend Jennifer Aniston, he did talk about another of the film's stars—yellow lab Marley. "I don't have a dog at the moment," he admitted. "I travel around a lot and I want to be good to a dog."