Louis Walsh at The X Factor 2012 Judges House in Las Vegas tells contestants not to do a Prince Harry

This year Louis Walsh has reportedly been allocated the groups category to mentor on The X Factor this year and he has drafted in Sharon Osborne to help him select which groups will make it to the live shows.

However, it seem that it will be all work and very little play for his groups in sin city because the X Factor judge has reportedly set his acts a curfew telling them ‘not to do a Prince Harry‘.

The acts have been told l NOT be out until all hours partying, and the judge has given everybody a strict 10pm curfew, according to The Sun.

Walsh is said to have told his acts: “Don’t let us catch you doing a Prince Harry. What happens in Vegas does not stay in Vegas when you’re on the X Factor – so don’t get caught out.”

An insider added: “The acts were excited – some of them haven’t been to the States before and they wanted to go into the bright lights of the big city.”

“Louis has already said that his acts are ‘not here to party’. They were told they had to be back at the hotel by 10pm.

“After the photos of Prince Harry naked in his Vegas hotel room recently, bosses did not want the same happening with their acts.”

However, the acts were reportedly told that they may be allowed a longer evening out on their last night if they work hard enough. Oh, feeling generous are we Louis?

“The acts must remember this is a family show and they can’t be seen in compromising situations,” the source added.

“[They] were disappointed, but on the last night there may be more of a chance for some supervised fun – once the hard work is out the way.”