Rita Ora suffers embarrassing nip-slip when she partied in central London on Saturday night.

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.