Rihanna, Christina Aguilera And will.i.am To Duet With X Factor Finalists

The celebrities duetting with the X Factor 2010 finalists this weekend are none other than Christina Aguilera, Robbie Williams, will.i.am and Rihanna.

The international stars have each reportedly agreed to be paired up with hopefuls Cher Lloyd, Rebecca Ferguson, Matt Cardle, and boyband One Direction in a bid to help them win the hit talent show.

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