Ben Affleck with Bieber Hairstyle?

While stars like Channing Tatum and Matt Damon are shaving their heads, Ben Affleck is at the other end of the spectrum: He's growing out his hair.The actor stepped out in Santa Monica, Calif. on Monday sporting a shaggy new 'do that channeled a certain 17-year-old multi-platinum pop star.But for those wondering if the actor has a case of Bieber Fever (he does have two daughters after all),