One Direction's Harry's Bum Notes

One Direction star Zayn Malik sent Twitter crazy this week when he posted a picture of bandmate Harry Styles baring his behind.

The snap was taken in the studio where Zayn, Harry, Liam, Niall and Louis were laying down tracks for their debut album. It features Harry standing on a stool in a state of undress.

"Ahah," was the comment from Zayn accompanying the photo. "Another day in studio with one direction :)"

Harry from One Direction has earned a reputation for mooning, but this is the first time photographic evidence has come to light.

One Direction on Twitter