Robbie, Rihanna, Will.i.am and Christina for X Factor duets

Christina Aguilera, Robbie Williams, will.i.am and Rihanna are the stars set to duet with The X Factor finalists on Saturday night’s final, according to Bang Showbiz.

Although it has not been confirmed who they will be paired up with, it is thought Robbie will perform with show favourite Matt Cardle.

If true, it will be the second year in a row, the Take That star has appeared in the show finals as last year, he performed with Olly Murs.

Robbie may have competition on his hands though. It has also been reported that Matt's mentor Dannii Minogue is desperate for him to perform with Dirrty girl Christina Aguilera, to bring a new twist to his sound.

An X Factor insider said: "A duet between Christina and Matt would be a magical moment - just like when Beyonce dueted with Alexandra Burke during 2008's final.

"Matt's voice is phenomenal and Christina can hit notes no one has dreamed of. They would be a perfect pairing no matter what song they sang."

Perhaps Rebecca Ferguson will snap up the spot with Mr Williams then?

Cher Lloyd would surely be the perfect match for mentor Cheryl Cole’s BFF, Will.i.am, and we’re sure the One Direction boys wouldn’t object to getting close to Rihanna. The boys were praised for there performance of her hit Only Girl in the World during last weekend’s semi-final show.

Who would you like to see duet on Saturday night’s show? Use our comment system to tell us.

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