She arrived onto the red carpet in a controversial orange couture gown with a bizarre bustle detail but Rita Ora decided to slip into something a little more comfortable for the Brit Awards after-party.

The 22-year-old singer flashed some leg in a black sequined dress that had a split that soared up to her hip.

Rita's dress boasted a halter neckline with gold choker detail and a plunging back leaving more of her flesh on show.

The R.I.P singer, who lost out on to Ben Howard for the Breakthrough Artist gong, had swapped a scruffy bun for tight curls as she arrived at the Sony bash held at the Arts club.

Rita proved gracious in her defeat and tweeted: 'Don't worry you win some you loose some. We still killed this year!!'

Earlier in the evening Rita had stepped out in couture gown by Ulyana Sergeenko couture gown but her sartorial gamble didn't pay off.

Rita's outfit boasted a bizarre bustle effect draping, an unflattering high neckline and frayed hems.

Perhaps the singer decided to change into the black dress after complaining that she was unable to breathe in the ensemble.

Rita was joined at the Sony bash by the likes of Labrinth, Simon Cowell and Harry Styles.

The One Direction singer brought his mother Anne Cox along to the bash and the pair were seen celebrating together.

Harry and his band were presented with the new Global Success Award and the group also performed their new charity single, at the ceremony held at the 02.