The duets for this year’s X Factor final are rumoured to feature Christina Aguilera, Robbie Williams, Rihanna and Will.I.Am.

According to the Daily Star and other news sources, the international stars have each reportedly agreed to join the last remaining contestants – Matt, Rebecca, One Direction and Cher – as they battle it out for this year’s winners title.

While nothing’s been confirmed by ITV, Dannii Minogue is said to be desperate for her act Matt to perform his last song with Christina, who is appearing on the show to promote a song from her new film Burlesque.

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 sing.”