Cheryl Cole proved that being a celebrity has its benefits, as the gorgeous dress she wore on Saturday night’s X Factor hasn’t even been released for sale yet!

This week Cheryl opted for a black and pink one shouldered gown by Russian designer Chapurin, it is part of the Spring 2010 range. The one shouldered look is really being worked on The X Factor this year, check out Dannii’s dress below and both girl’s dresses last week also. We first thought that Cheryl had accessorised the dress with that fab chunky necklace, but when we checked out the catwalk video below (forward to 06.50) we realised that it might actually be part of the dress.

Dannii opted for another Aussie dress on Saturday night’s semi final. She wore an orange Aurelio Costarella Spring 2010 one-sleeved orange gown. While the dress was stunning, we thought that the ruched waist bulked out Dannii a little, she definitely suits more fitted and svelte dresses.