The singer will join Simon Cowell to help him pick contestants, according to TMZ.
The news comes after it was reported that Justin Bieber has agreed to help out Cowell's rival judge LA Reid at the Judges' Houses stage of the competition.
Meanwhile, rumours have suggested that Nick Jonas will be helping out new judge Demi Lovato during the competition.
However, it is not yet clear who will join Britney Spears at the Judges' Houses part of the show.
The X Factor USA will return for its new season on September 12 at 8/7c on Fox.
Watch a promo for the new season of The X Factor USA below: