Chart-topping songstress Rita Ora performed a gig in London last night (June 18) without sleeping for "48 hours".

The platinum-haired singer took to the stage at Sony Music's HQ for the Xperia Access launch after touching down from a trip to Los Angeles.

Ora addressed the crowd at the UK show and admitting to feeling a little out of sorts.

According to Contact Music the star revealed: ''I haven't slept for about 48 hours but who cares. I came straight off a flight and headed straight here. I've barely had any time to do my hair and my make up, so I apologise.''

Ora performed some of her best-loved hits including 'Shine Ya Light', 'How We Do' and 'R.I.P' at the event.

The star also revealed that she is looking forward to the release of her second album later this year.

She explained: ''This past year has really changed me, it's been the most surreal time. It's pretty awesome. 'The second album I'm going to release is something can't wait to show you guys. I'm really excited.

She added: ''I used to listen to so much music and I know my first album was an introduction of me to you guys and it's more than an honour that you guys have given attention to it, so thank you for that.''