X Factor judge Nick Grimshaw has revealed that even Adele and Coldplay will be starstruck by Che Chesterman's duet partner this weekend.
Speaking to Digital Spy at the X Factor final red carpet yesterday, Grimmy promised that the celebrity joining Che on stage is "world huge" - and revealed that "everyone" will be starstruck.
And as for those rumours that Reggie N Bollie will be joined by Sean Paul - which we can all agree would be amazing - Cheryl Fernandez-Versini revealed that there are still last-minute discussions taking place.
It seems Cheryl has been working very hard on getting her act up to scratch, too, as she apologised to Reggie N Bollie for adding more and more to their performances in rehearsals.
But one act whose duet partner we DO know is Louisa Johnson - who will be teaming up with her mentor Rita Ora.
And it might not be the only time they perform together... as Rita suggested they should duet on Louisa's first album.
The X Factor final kicks off on Saturday (December 12) at 8pm on ITV and continues on Sunday (December 13) at 8pm on ITV.
