She's been booked to perform alongside the rest of this year's finalists as part of an epic group number during the live show.
They'll sing alongside 5 After Midnight, Matt Terry and Saara Aalto who face off in this year's final to be crowned the winner.
As well as the finalists, rumoured guest performers including Little Mix and Sam Smith, while James Arthur, The Weeknd and Adam Lambert could be set to duet with the final three.
The X Factor 2016 final is set to be the closest race ever with each of the remaining acts having both topped the vote and appeared in the sing off over the past nine weeks.
"It’s going to be just huge," said X Factor creative director Brian Friedman this week. "For those three that perform in that setting – it's a taste of victory. You can expect something very special…"
He told ITV's Lorraine: “It’s all about the duets because they get to sing with someone in the game.
“It gives them a feeling as if they have already made it.”
The X Factor 2016 final starts on TV from Wembley Arena at Saturday night, December 10 from 8PM on ITV and continues on Sunday night at the same time.
On the Saturday all three finalists will perform a solo song as lines open to vote for the winner.
They'll each then sing a second song (their duet) before lines are frozen. The contestant with the fewest votes will then be eliminated from the competition.
On Sunday the remaining two acts will go head to head as lines reopen.
The top two will each sing their potential winner's song before lines close towards the end of the evening when the winner will be confirmed.