Simon Cowell confirmed on last night’s Xtra Factor that he had confirmed all the guest performances and duets for next week’s X Factor final. The Mirror has now reported that those guests would be George Michael, Paul McCartney, Michael Buble and Robbie Williams.

It is thought that Olly Murs will perform with Robbie Williams, Joe McElderry will sing with George Michael and Stacey Solomon will duet with Michael Buble. Paul McCartney will most likely give a solo performance during the live grand final.

A source told The Mirror: “In previous years we have had some great acts but nothing beats having FOUR of the great male solo acts in one weekend.

“This has all the makings of the biggest X Factor show ever. It will be the only thing people will be talking about at work on Monday.”

Another source added: “George jumped at the chance to go on. He’s a huge fan and was chuffed with the Wham and George Michael week.”

We’d love to hear your thoughts on the celebrity lineup, we’re a little disappointed ourselves. As always, leave your comments below.