Reigning X Factor winner Matt Terry and Black Eyed Peas star Fergie have been revealed as Week 4's guest stars.
Matt released his new single ‘Sucker For You’ in October, with the song peaking in the Official Singles Chart at number 83.
The track was taken from his debut album called Trouble which will be released on November 24.
Meanwhile, the contestants left remaining on the show will be taking on their latest theme, 'Crazy In Love'
Once again, two categories will perform on Saturday's show and two categories on the Sunday night, although which categories will sing when hasn't yet been revealed.
And in a further twist, it'll be a DOUBLE ELIMINATION on both nights, meaning a total of four acts will head home.
The quadruple exit had been planned for last weekend but was instead postponed until what will be the Quarter Finals of this year's series.
Currently a total of 10 contestants remain in the competition's live stages.
They are Simon Cowell's Groups Rak-Su, The CutKelvins and Sean and Conor Price, Sharon Osbourne's Girls Grace Davies, Rai-Elle Williams and Holly Tandy.
Plus Louis Walsh's Boys Lloyd Macey and Sam Black and Nicole Scherzinger's Overs Kevin Davy White and Matt Linnen.
The X Factor 2017 continues next Saturday at 8:10PM and Sunday night at 7:30PM on ITV.