Nicole, 35, wowed in a form-fitting faux leather Misguided dress and grey leopard print heels and was pictured leaving private member haunt The Arts Club.
The former Pussycat Doll's hair had been tonged to perfection and she completed her look with a dark mani, lashings of mascara and a pink lip.
Earlier, Nicole had been busy filming tonight's episode of Celebrity Juice, alongside Keith Lemon, Fearne Cotton and Holly Willoughby.
Her outfit, though a little more dressed down, was equally as stunning as she headed into ITV's Riverside Studios.
Nicole arrived for the show wearing black skinny jeans and a gorgeous black sheer top. She topped of her daytime getup with an on-trend felt black hat.
It also seems Nicole's fellow X Factor judge Louis Walsh will be making an appearance on Celebrity Juice too.
Last night, Fearne shared a picture of herself sat alongside Louis on the set of the popular ITV2 panel show.
Tweeting it to her fans, Fearne teased: "On my team tonight Lou Lou and........"