The X Factor final kicks off!

The three final X Factor contestants will begin their battle tonight (Saturday) to make it to the final two in the competition.

The show has enlisted a trio of superstars to perform with each contestant, to help boost their chances of winning. Olly Murs will sing alongside Robbie Williams, whilst Joe McElderry will perform with George Michael, and Michael Buble has been picked to appear with Stacey Solomon.

At the end of Saturday's show the contestant with the lowest number of votes will leave the competition, leaving two acts to battle it out on Sunday night to become the winner of the X-Factor 2009.

It's been reported that the winner's song will be Climb, originally by Miley Cyrus. The track will be released by the winner on Wednesday 16th December, but you can pre-order your copy here now!