Robbie Williams To Be Guest Mentor On The X Factor
Pop veteran to help contestants on this weekend's show...
The former Take That star will be shown working with the finalists on Saturday night's show - before performing himself on the Sunday night results show.
Robbie, 38, was Gary Barlow's helper at the Judges' Houses stage last year, but got bumped in favour of Cheryl Cole for that job this year.
Rob has apparently been offering support and advice to contestants including Jade Ellis, Ella Henderson, Union J and Rylan Clark - and has previously publicly expressed his support for Rylan on Twitter.
We told you earlier today how Robbie is among the pop stars involved in a Hillsborough charity single.