Christina Aguilera to steal Cheryl's seat?

Christina Aguilera's the latest name to be linked with the US X-Factor know the one we thought Cheryl Cole had landed.

Cheryl appeared to be the hot favourite to sit next to Simon Cowell but every day a new name is emerging as a contender.

A source claims, "Although Simon is desperate for Cheryl to join him on the judging panel, bosses just aren't convinced. Both Rihanna and Katy Perry have been mentioned as possible candidates.

"Christina is the one all bosses are agreed on. She has it all; looks, talent and she isn't afraid to speak her mind. She is a massive star globally and her voice is recognised as one of the best of all time so there really isn't any competition especially where Cheryl is concerned."

So who would you go with - Cheryl, Rihanna, Katy and Christina?