Justin Bieber has opened up on some of his celebrity crushes, with Beyoncé tickling his fancy.

In an interview with Q magazine, Bieber was asked who he would like to follow him on Twitter, replying with a torrent of admiration for singer Beyoncé. He said:

"Beyoncé. She's so sexy. I'm in love with everything about her. But I love Jay-Z, so I can't do anything about it. I've had a crush on her for a long time. But I wouldn't come between them - I would never do that! [Winks] But I'm going to make her follow me just by keeping talking about it."

Bieber meanwhile was also asked about what he looks for physically in a woman - revealing a taste for Nicki Minaj's backside. He said:

"I think I'm a butt guy. I just like butts. I'm attracted to them. Do I have any favourites? Nicki Minaj has got a nice one."

Watch the video for Justin Bieber's 'Boyfriend' below: