The singer, who is left with two acts in the ITV competition, was keen to command attention in the revealing, backless number.
She was a vision in her flowing lilac and grey gown which, although floor-sweeping in length, flashed a mass of cleavage as the plunging neckline flowed down to her waistline.
However, as she emerged from a house party, she found herself exposing her nipple in a fashion
faux pas.
