There has been much speculation about which celebrities will duet with the X Factor finalists this weekend.
And in a press conference held on Thursday, those details have finally been confirmed.
Despite reports he would be working alongside Christina Aguilera, Matt Cardle (pictured with mentor Dannii) will be taking to the stage with pop sensation Rihanna.
Rebecca Ferguson will instead get the chance to sing alongside the Burlesque star, while One Direction will duet with Robbie Williams and Cher Lloyd will sing with Black Eyed Peas' Will.i.am.
It has also been revealed that each of the four final acts have recorded an individual winner's song for the very first time.
Currently Matt is 10/11 favourite to win, with Rebecca at 5/2, One Direction at 11/4 and Cher at 20/1.
Photo: ę Rex