The ever-experimental Olsen gives ultra-blonde a try. Plus: Tom Cruise, Britney, Justin & Cameron and more

WARMING UP

Pop star and new baseball team co-owner Nick Lachey scopes out the goods at the backstage gift lounge at New York's Madison Square Garden on Friday, where the singer was set to perform at Z100's "Jingle Ball" concert. The radio fest also featured Nelly Furtado and Rihanna.