Robbie Williams will return to 'The X Factor' to perform at the show's final.
The 'Rock DJ' singer is being lined up to duet with finalist Olly Murs on the ITV talent show, his second appearance on the show this series.
It is also rumoured finalist Joe McElderry will sing with George Michael while Stacey Solomon may be lined up to perform with Leona Lewis, who has cancelled an appearance at a US radio station 93.3 FLZ's 'Jingle Ball' in Florida because she has been offered a spot on the show, according to the station's programme director.
Beatles singer Paul McCartney and Michael Buble are also being lined up to appear on the final, which is held over Saturday and Sunday.
Robbie's first appearance on 'The X Factor' was controversial as he appeared wide-eyed and nervous during his performance of single 'Bodies', his comeback after three years away from the UK.
He later admitted he his nerves had been shaken when a door failed to open, preventing him from making his stage entrance.
He said: "I don't know if you've ever had 10 million plus people ready to judge you on your first performance back in three years, but if the door between you and them isn't opening it's enough to throw you right off your stride.
"But the audience were immense and the love in the room was palpable. It all felt so electric. Like three years of anxiety leaving my body."