The X Factor U.K. has unveiled a bevy of performers who'll grace the stage during the upcoming season. Among the biggest names are Lady Gaga, Katy Perry and Mariah Carey.

The Mother Monster will perform her latest single, "Applause," while Perry does the same with her cut, "Roar." The track Mariah will perform has not been announced, although it has been confirmed it will be from her upcoming album, The Art of Letting Go.

Other names announced for guest spots are Susan Boyle, One Direction, last year's winner James Arthur and Robbie Williams.

The Daily Star claims that producer Simon Cowell has a further list of performers he's going after, which includes Beyoncé, Celine Dion, Gloria Estefan, Cher and Britney Spears. Miley Cyrus' name was floated in a previous report.

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