Pint-size pop idol Justin Bieber hits the Prudential Center in support of his latest one, Believe. We're mildly more interested in the boy wonder's performance these days, ever since he hit his late teens in such bracing (read: up all night doing who knows what) style. Will he vomit onstage again? Will he pee in a mop bucket? (Check the online gossip.) Find out tonight, kids!