PHOTO: Robert Pattinson Gets Unwrapped

06/02/2009 at 07:45 PM EDT

Robert Pattinson is getting the hang of this heartthrob thing. In a photo shoot for Interview magazine, the Twilight star exudes sexy in a black and white photo with his baggy sweats pulled provocatively low.

But the actor, who previously was known for his role as Cederic Diggory in the Harry Potter films, isn't taking the newfound stardom too seriously.

"It's funny because teenage girls would say, 'Oh, my God, you're Cedric!' It switched in a week to 'Oh, my God, it's Edward!' " he says of his part as vampire Edward Cullen. "Allegiances change so freely in the teen-girl world."

Up next in Interview, check out New Moon hunk Taylor Lautner, who poses in the magazine's upcoming issue.