Last updated at 15:19
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Who are The X Factor final 24?

The final 24 contestants who have been selected by the judges to go into the next stage of the competition
Judge Nicole Scherzinger, centre, chose Abbie Alton, Tamera Foster, Hannah Barrett, Jade Richards, Relley Clarke and Melanie McCabe to be in her final six and join her at her house in Antigua.
Nicole and the final 6 girls
Rough Copy, Kingsland, Brick City, Code 4, Xyra and Stop Look Listen were the groups chosen to join Gary and guest mentor Olly Murs at Gary's house in New York.
Gary Barlow and the final 6 groups
Luke Friend, Giles Potter, Nicholas McDonald, Paul Akister, Ryan Mathie and Sam Callahan impressed Louis Walsh enough to be given a spot in his final six. These lucky lads will be jetting off to San Tropez in France!
Louis Walsh and the final 6 boys
In the over-25 category, Andrea Magee, Shelley Smith, Sam Bailey, Zoe Devlin, Lorna Simpson and Joseph Whelan will jet off to Sharon Osborne's house in Los Angeles, California where Robbie Williams will join as a guest mentor.
Sharon Osborne with the over 25 final 6
The hard work isn't over yet though. Each judge can only take three acts through to the live finals, so keep checking the Newsround website for details of the final 12!
Louise Walsh, Sharon Osborne, Nicole Serzinger and Gary Barlow