X Factor finalist Rhydian Roberts will perform a duet with classical singer, Katherine Jenkins, on this weeks ITV final.

Dannii Minogue has really managed to pull some great celebrities out of the bag for her acts, Leon Jackson is also rumoured to be duetting with Kylie Minogue.

A show insider told the Daily Star: “It will be something truly special. Simon Cowell is going to have to do something big to win.”