However, the Sun has revealed that all is not as it seems, reporting that the singers each faced the judges on their own, before being picked to form a new group.
There was no mention of their individual auditions when they tried out as a group earlier this year.
“At the time a lot of viewers were disappointed that I didn’t put the girls through, now that a place has opened up in my category, I’ve listened to the fans and am delighted to be bringing the girls back.
“They’re a great girl group and I’m hoping will take me all the way to the final.”
'X Factor' Winners
Series One, 2004(01 of13)
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Won by: Steve BrooksteinMentor: Simon CowellRunner up: G4 (credit:Rex)
Series Two, 2005(02 of13)
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Won by: Shayne WardMentor: Louis WalshRunner up: Andy Abraham (credit:Rex)
Series Three, 2006(03 of13)
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Won by: Leona LewisMentor: Simon CowellRunner up: Ray Quinn (credit:Rex)
Series Four, 2007(04 of13)
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Won by: Leon JacksonMentor: Dannii MinogueRunner up: Rhydian Roberts (credit:Rex)
Series Five, 2008(05 of13)
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Won by: Alexandra BurkeMentor: Cheryl ColeRunner up: JLS (credit:Rex)
Series Six, 2009(06 of13)
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Won by: Joe McElderryMentor: Cheryl ColeRunner up: Olly Murs (credit:Rex)
Series Seven, 2010(07 of13)
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Won by: Matt CardleMentor: Dannii MinogueRunner up: Rebecca Ferguson (credit:Rex)
Series Eight, 2011(08 of13)
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Won by: Little MixMentor: TulisaRunner up: Marcus Collins (credit:Rex)
Series Nine, 2012(09 of13)
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Won by: James ArthurMentor: Nicole ScherzingerRunner up: Jahmene Douglas (credit:Rex)
Series 10, 2013(10 of13)
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Won by: Sam BaileyMentor: Sharon OsbourneRunner up: Nicholas McDonald (credit:Rex)
Series 11, 2014(11 of13)
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Won by: Ben HaenowMentor: Simon CowellRunner up: Fleur East (credit:Syco/Thames/Corbis)
Series 12, 2015(12 of13)
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Won by: Louisa JohnsonMentor: Rita OraRunner up: Reggie N Bollie (credit:Syco / Thames / Corbis)
Series 13, 2016(13 of13)
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Won by: Matt Terry Mentor: Nicole Scherzinger Runner up: Saara Aalto (credit:Syco/Thames/Dymond)