Daniel Radcliffe Was Convinced Justin Bieber Was a WomanDaniel Radcliffe told MTV News he's "out of the loop when it comes to pop culture," and then committed a stellar gaffe to prove it.

"I only heard Justin Bieber for the first time two weeks ago," the 'Harry Potter' star said. "I genuinely thought it was a woman singing. I'd never heard it before. Is it big in England yet?" See the clip: