World renowned singer and pop star, Beyonce Knowles has been confirmed as performing on this Saturday nights X Factor final. She is said to be all set to perform a duet with the gorgeous Alexandra Burke.

Also showing up will be recently reformed Irish manband, Boyzone, who will be singing with teenager Eoghan Quigg and Westlife will share the stage with with JLS.

JLS were reportedly supposed to be singing with Rhianna, unfortunately she is said to have pulled out at the last minute.

Its a shame as X Factor insiders were sure that the collaboration could have won them the winners title, with one source telling The Daily Star: "The feeling is that Rihanna’s backing is the clincher. Even Simon Cowell has admitted they could win. He views them as an increasingly profitable asset."