Perrie Edwards: Radio 1 Teen Awards Outfit

Little Mix at BBC Radio 1 Teen Awards November 3rd 2013 – photo: Optic Photos, PacificCoastNews
Perrie Edwards posed with her bandmates on the red carpet for the BBC Radio 1 Teen Awards today wearing a Three Floor White Out Dress (£180.00), teamed with Topshop Razzle Glitter Sandals ($110.00).
Where was Perrie Edwards outfit (black blazer and trousers, white lacy top and boots) from when Little Mix performed on X Factor Sun Nov 3rd?