X Factor finalists confirm the famous faces they’ll be dueting with in the final this weekend including judge Robbie Williams and Leona Lewis

THERE are non-stop duets on The X Factor this weekend, with Robbie Williams, Leona Lewis and James Arthur all set to perform with the finalists.

On Saturday, Scarlett Lee will sing with Robbie, revealing on Good Morning Britain today that they will be belting out his classic Angels together.

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Dalton Harris will perform with soul star Emeli Sande, who was the only person to perform at both the opening and closing of the London 2012 Olympics.

And Anthony Russell will be teamed up with Scottish singer-songwriter Tom Walker.

Then, once one singer is eliminated from The X Factor, there will be even more collaborations.

The top two performers will sing their potential winner’s single with their featured artist in front of their mentors and judges Robbie and Ayda Field, but only the champion will get to release it.

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Simon Cowell's Scarlett is set to perform with the show's 2006 winner Leona Lewis, who will be hoping to score her first No1 since Run in 2008.

Bookies’ favourite Dalton, mentored by Louis Tomlinson, will collaborate with 2012 winner James Arthur.

And Anthony — also advised by Louis — will team up with The Kaiser Chiefs, fronted by ex-The Voice coach Ricky Wilson.

The addition of established stars to the winner's first single is thought to be an attempt to boost the chances of bagging the Christmas No1.

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A TV insider told The Sun: “The X Factor no longer has a monopoly on the Christmas No1 like in the early days, so this exciting spin on the winner’s single will ensure it is in the running.

"James, Leona and the Kaiser Chiefs are friends of the show and were happy to lend their vocals to the winner’s singles, even though only one of the records will see the light of day.

“While Dalton, Anthony or Scarlett have to share the glory, the chance to collaborate with one of the country’s biggest acts on their first ever release is an added perk.”

Sunday's final will also see performances from Ellie Goulding, George Ezra and Take That, who will perform with Robbie for the first time in seven years.

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