Coldplay, Michael Buble and Jessie J are lined-up to duet with this year's X Factor contestants in the live final, it has been reported.
The live finals will this year take place at Wembley Arena on December 10-11.
A source told the Daily Star that Coldplay would be paired with singer Janet Devlin of she madethe final: "There isn't anyone left in the show who would suit Coldplay's music apart from Janet.
"She wowed everyone when she sang 'Fix You'. It shows how confident everyone is that Janet will make the final."
The newspaper also reports that Michael Buble is already booked to perform for the two-part final on December 10 and 11 and is touted to sing with Marcus Collins,
Jessie will reportedly be paired with girldband Little Mix if they make the final stage of the show.
Coldplay - live photos