Jesy Nelson, in a black dress, (second from right) with 'The X Factor' mentor Tulisa Contostavlos, centre, and Little Mix bandmates Jade Thirlwall, Leigh-Anne Pinnock and Perrie Edwards, at the UK premiere of 'The Twilight Saga: Breaking Dawn Part 1' on November 16, 2011. All Photos: Getty Images

Jesy Nelson's fashion evolution in 31 photos: mismatched two-pieces to street style pro