Rita Ora parties with Kate Moss at Nick Grimshaw's birthday bash in mini-dress and thigh-high boots

She's known for her rather risqué ensembles, and her outfit on Friday night was no exception.

Rita Ora was seen putting on quite the leggy display as she partied at Soho House in London for Nick 'Grimmy' Grimshaw's 31st birthday.

The 24-year-old singer - who's a judge on The X Factor, along with the birthday boy - certainly turned heads in her daring ensemble, as she left the bash arm-in-arm with supermodel Kate Moss, 41.

Rita donned a thigh-skimming mini-dress emblazoned with the superhero, Captain America.

The long-sleeve, high-neck dress covered up her cleavage - which was on full-display at the MTV VMAs at the weekend - but her pins took centre-stage.

She styled the mini-dress with a pair of thigh-high boots, which featured a gold platform to add height to her petite 5ft 4in frame.