Hilton and the Playboy mogul pucker up in Hollywood. Plus: Jessica Simpson, Ellen Pompeo, Ashton & Demi and more

AMERICAN IDOL

Someone's feeling cheeky! Vince Vaughn makes like Dieter ("Now is the time on 'Sprockets' when we dance!") at the German premiere of Couples Retreat in Hamburg on Tuesday. Stateside, the comedy, which also stars Jason Bateman, topped last weekend's box office.