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As rumours mount that Spice Girls star Mel B has been signed on as the newest judge on the show, we run down some of the other contenders who could be a last minute addition to the panel.
This is the lady EVERYONE is expecting to be announced to join Cheryl, Louis and Simon on the show. But could they throw us a curveball?
The 'Rolling In The Deep' singer was recently rumoured to be keen on joining the show in the coming years, could Simon have wangled an early acceptance from Adele to sign on for this year instead?
Or will the X Factor throw us ANOTHER curveball by bringing Sharon back for another year after her return in 2013?
Aside from Mel B, Britain's Got Talent judge Alesha Dixon is the other favourite to sit next to Cheryl, Louis and Simon. Picture: Getty
Black Eyed Peas singer Fergie has been regularly linked to a role on the show, and we reckon she'd be a VERY fierce judge! Picture: Getty
While Ellie isn't exactly bursting with spare time these days, releasing a constant stream of new music and jetting around the world for show, she's still been heavily linked to the judging panel over the past year. Picture: @liamunderwood
The 'Heart Attack' singer has already worked with Simon on the US version of The X Factor, so it isn't out of the question that he might bring her in to sit next to him, Cheryl and Louis. Picture: PA
While Rita's previously guest-judged on the show she said earlier this year she'll be too busy to be a full-time judge for now. Here's hoping this was a red herring and she'll be signing up for that elusive final spot! Picture: Splash