30/10/2011 10:12 GMT | Updated 22/05/2015 10:12 BST

Hot Or Not: Tulisa's X Factor Catwoman Costume

She was the only X Factor judge that bothered to get into the Halloween spirit - but if she cared she didn't show it.

Hot or not: Tulisa's X Factor Catwoman costume Miaow: Tulisa vamped up for Halloween in a Catwoman costume. Photo: Rex

Kelly Rowland's stand-in, Alexandra Burke, shimmered in a sparkly minidress.

See all the latest X Factor fashion below: