Gary Barlow, Kelly Rowland and Tulisa to duet with their acts during X Factor final

In an unexpected twist, X Factor judges Gary Barlow, Tulisa Contostavlos and Marie Claire's very own cover star Kelly Rowland will sing with their acts on Saturday's show

In an unexpected twist, X Factor judges Gary Barlow, Tulisa Contostavlos and our very own cover star Kelly Rowland will sing with their acts on Saturday's show.

In a show first, the three judges will join their acts in their final push to win the contest during the series finale this weekend.

Rumours have it that our gorgeous cover girl Kelly Rowland will team up with Amelia Lily on Ike and Tina Turner's classic River Deep, Mountain High, while Tulisa and Little Mix will perform a mash-up of two Alicia Keys songs- Empire State Of Mind and If I Ain't Got You.

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Gary Barlow and Marcus Collins are to duet on an undisclosed number for the all important final this weekend.

Louis Walsh is the only judge with no act to reach the final so will sit this one out (thank goodness!).

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The judges, who have been secretly rehearsing all week, stepped in after show bosses struggled to land the big names they wanted for the final.

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With Adele having to pull out of her planned performance after undergoing throat surgery, producers are hoping to land Mariah Carey as the guest star.

Coldplay have agreed to perform, but declined a duet with one of the acts. They will join X Factor alumni One Direction, Leona Lewis and JLS who will be performing over the weekend.

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