May 20, 2010 01:30 PM

MMichael Rozman/Warner Bros.

After some did-he-or-didn’t-he speculation about his recent buzz cut, the formerly long-locked Robert Pattinson ditched the baseball cap that he was hiding under last weekend to reveal a new, noticeably shorter hairstyle on the Ellen DeGeneres Show yesterday. The reason behind the sudden change? “Head lice,” he joked. “It’s three days old,” the 24-year-old Twilight hottie kidded to DeGeneres, saying “I got a terrible infestation of nits and I had to shave it all off.” Warned Ellen: “Don’t start that rumor.” Relax, Twihards: The real explanation behind the new close-crop is his new movie with Reese Witherspoon, Water For Elephants, which the actor is set to start filming in Los Angeles this Thursday. –Marissa Patlingrao Cooley

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