X Factor Halloween costumes through the ages

Joe McElderry, 2009

Lucy Spraggan, 2012

Tulisa, 2012

District 3, 2012

Chris Maloney, Jahmene Douglas, Kye Sones and James Arthur, 2012

Union J, 2012

Zayn Malik, 2012

Katie Waissel and The Red Velvet Lovers

Little Mix, 2011

Wagner, 2010

Mary Byrne, 2010

Stacey Soloman and Jedward, 2009

Jamie Archer and Olly Murs, 2009

Jamie Archer, Lloyd Daniels, Olly Murs, Joe McElderry and Stacey Solomon

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Chico Slimani

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The Conway Sisters

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The MacDonald Brothers and Raymond Quinn, 2006

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Eton Road, 2006