Justin Timberlake Teams Up With Ex Cameron Diaz for New Flick

Credit: Lalo Yasky/WireImage.com

--Justin Timberlake is ready to be bad. The singer/actor has signed on to star with his ex-girlfriend, Cameron Diaz, in the Columbia Pictures comedy Bad Teacher. [Perez Hilton]

--Hair today, gone tomorrow: A week after her split from Ryan Phillippe was reported, Abbie Cornish showed off a shorter 'do at a Vanity Fair "The Stylist Project" event in L.A. Monday. [Just Jared]

--Billy Baldwin's marriage to Chynna Phillips isn't over just yet. The former Wilson Phillips singer filed and then withdrew divorce papers in a Santa Monica, Calif., to dissolve her 18-year marriage to the Gossip Girl guest star. "They will work through their personal issues and they are committed to staying together," a rep for Phillips says. [PopEater]

--Backstreet's Back? The '90s boy band the Backstreet Boys are setting sail for a four-day fan cruise from Florida Dec. 9. On the agenda during the band's Caribbean getaway? A question and answer session, dock party and photo session that the band promises will be a "once in a lifetime" opportunity. [StarPulse.com]