Nicole Scherzinger, who was at the final day of ITV show's auditions at Wembley Arena, turned up the heat in London in a black and white optical illusion dress.
The X Factor judge teamed up her dress with pink heels, the Sun reported.
Scherzinger, who recently split with Lewis Hamilton, was accompanied by fellow judges Louis Walsh, Gary Barlow and Sharon Osbourne.
Louis was seen donning shades and a plum jacket over a white shirt and jeans, while Barlow wore a khaki jacket over dark trousers.
