Justin Bieber and Kelly Rowland have been confirmed to perform as special guests on this weekend's X Factor semi-final.
Bieber confirmed the news on his Twitter account yesterday, writing: "UK!!! X Factor this week. #Mistletoe."
The performance will not be live but a pre-recorded showing of his track 'Mistletoe' from his Christmas LP Under The Mistletoe.
This year's X Factor winner could be set to cover Damien Rice's track 'Cannonball', it has been reported.
According to The Sun, Simon Cowell's Syco team are currently deciding what should be released as this year's X Factor winners song and 'Cannonball' is a top contender.