Radcliffe: 'I thought Bieber was a girl'Related: Lady Gaga, Daniel Radcliffe, Justin Bieber
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Daniel Radcliffe was sure that Justin Bieber was a girl.
The "Harry Potter" star admits he struggles to keep up with current hot pop stars, but had heard Bieber's hit "Baby" on the radio -- and believed the 16-year-old's high-pitched vocals belonged to a female.
He tells MTV.com, "I only heard Justin Bieber for the first time two weeks ago. I genuinely thought it was a woman singing. I'd never heard it before.
"I'm so out of the loop when it comes to pop culture that I kind of don't even try anymore."
RELATED: See more Justin pics
But there is one superstar the Brit can't help but notice: he's a huge Lady GaGa fan.
He adds, "I know who Lady GaGa is. I think she's kind of amazing. She's really got a voice. My God. Not my kind of music, particularly, but she can really sing."
RELATED: See more Gaga pics
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