One Direction Tell Simon Cowell To "Behave"

'What Makes You Beautiful' singers One Direction say they have to keep their X Factor boss Simon Cowell in check.

Just before the new single was released there were all sorts of stories about Simon Cowell banning the One Direction boys from having his phone number, and imposing a strict curfew on Harry, Liam, Louis, Niall and Zayn.

But the boys say Simon is a brill boss and if anything, they're the ones making sure he's on his best behaviour.

"Simon said to us, 'Go out and be the band that you want to be and enjoy it'," Harry revealed.

"That suited us perfectly."

"And he hasn't been too strict," Louis added in the One Direction chat with The Sun.

"In fact we tell him to behave!"

One Direction's song 'What Makes You Beautiful' reached No. 1 on the Vodafone Big Top 40 and is out to buy and download now.

If you missed our live chat with the lads, you can watch the One Direction webchat video here.