Former X Factor judge Cheryl Cole will be back on the show tonight, almost two years after her departure.
She bowed out from the UK X Factor after the 2010 series to take up a short-lived place on the panel for the US version of the show.
Cole - who was given her big break on TV talent show Popstars: The Rivals - will tell the X Factor hopefuls she can sympathise because she has been in their position.
The Girls Aloud star says:
I've been there and I have been here so I know how you are all feeling, I am just excited to see what you have got. [I] think it's going to be amazing and I wish you the best of luck from the bottom of my heart.
Other guest mentors include Tinie Tempah, who teams up with Tulisa Contostavlos, Ne-Yo who accompanies Nicole Scherzinger and Sharon Osbourne who is the sidekick to Louis Walsh.
They will sit through performances by their contestants in tonight's edition.