Leona Lewis will return to the show that catapulted to her international stardom.
The Bleeding Love star will perform her new single Happy on the X Factor's Sunday night results show on November 8th.
It will be her first live TV performance since she was allegedly struck in the face at a book signing at Waterstone's in the Piccadilly area of London.
Peter Kowalczyk, 29, was charged with assaulting the singer and the case has been adjourned at City of Westminster Magistrates' Court until November 23rd. He has been sectioned under the Mental Health Act and is being examined by psychiatrists.
After cancelling an appearance on BBC's The One Show and a two-day promotional tour in Germany, Lewis, 24, has vowed to carry on with her life as normal. She said: "I don't like to dwell on the negatives, I'm a very positive person."
It will be her second live performance on X Factor, since winning the competition in 2006. Last year she performed her number one hit Bleeding Love.
Lewis will be sharing the stage with US rappers The Black Eyed Peas, who have held the number one spot on the US Billboard Hot 100 Singles Chart for the last six months.
This weekend's X Factor will feature the first behind-the-scenes look at the making of the contestants' new charity single You Are Not Alone, with proceeds going to Great Ormond Street hospital.
Twins John and Edward kept the production team amused in between takes by teaching them the moves to their Britney Spears dance routine for Oops I Did It Again.
Last year's X Factor charity single Hero, for Help for Heroes, reached number one and became the fastest selling single of the year.
Missed The X Factor? To get all the updates, join the discussions and catch up on previous episodes, visit The X Factor.
© Press Association