The Greatest Showman star Keala Settle will perform on The X Factor live shows this Sunday night.
Broadway and movie actress Keala appears in the hit musical singing Oscar nominated track This Is Me.
She'll be one of two guest acts appearing on The X Factor this Sunday night, as part of the first weekend of live shows.
The theme for the opening weekend is also 'This Is Me' and will see the finalists each performing a song they feel best represent them as artists.
Alongside Keala, last year's X Factor winners Rak-Su will also be performing in Sunday night's results show.
They said in an announcement posted on Twitter: "We got a little announcement to make. This weekend, on Sunday, we are going to be performing our new song I Want You To Freak on The X Factor. We're coming back, we'll see you on Sunday!"
The group released their new single I Want You To Freak to download and stream earlier this month.
But before Sunday's show are Saturday's performances.
The X Factor live shows begin TONIGHT at 8:25PM on ITV.
The 16 X Factor finalists will perform live for judges Simon Cowell, Louis Tomlinson, Robbie Williams and Ayda Williams as well as viewers, who will vote for their favourite.
This series, Simon is in charge of the Girls category, Robbie is mentoring the Groups, Ayda has the Overs and Louis is with the Boys.
The X Factor airs Saturday at 8:25PM and Sunday at 8PM.