X Factor judges to duet with their own acts in final

The X Factor judges have confirmed they will duet with their own acts in this weekend's final.

Contestant Marcus Collins will sing alongside Gary Barlow, Tulisa with her girl group Little Mix and Kelly Rowland with Amelia Lily.

The only judge not to sing will be Louis Walsh as he has no acts left in the competition.

The final will take place at Wembley Arena, with Coldplay, Leona Lewis and One Direction also performing.

X Factor bosses are hoping to pull in 20 million viewers.

Show finalists, Marcus Collins, 23, girl group Little Mix and Amelia Lily - who are all 17 - have been rehearsing all week with their mentors.

At an X Factor press conference in London, Gary Barlow said: "The judges will be more nervous than the acts."

Song choices

The Take That singer has confirmed he and Marcus will sing Billy Joel's Always A Woman.

Kelly Rowland and Amelia will sing Ike and Tina Turner's River Deep, Mountain High, and Tulisa and Little Mix will perform a medley of Alicia Keys hits If I Ain't Got You and Empire State Of Mind.

Gary Barlow joked with the press saying at least viewers would be spared a performance from Louis Walsh.

"Thank God Louis didn't get an act in the final," he said.

Louis replied: "I think Johnny (Robinson) and I would have been a good duet. We were thinking of Renee and Renato (80's pop duo), Save Your Love."

The finalists have already recorded the same song in the studio, but the winner's version will be the one released in time for Christmas.

The judges wouldn't confirm the name of the track.

Tulisa, Louis Walsh and Kelly Rowland were also non-committal when they were asked about taking part in the next series.

Gary Barlow replied: "You can never say the right thing, you can never say the wrong thing."