Rita Ora has revealed that she was left hot under the collar when working with her boyfriend Calvin Harris in the studio.

The Scottish DJ and musician wrote and produced the singer's new single 'I Will Never Let You Down'.

Speaking to The Sun, Ora said that the duo initially thought that working together might cause friction.

However, it seems it was anything but, with the 'Hot Right Now' star saying that she found Harris more attractive when working with him.

She said: "I thought he was even more sexy when I actually saw him working in the studio. We'd had this pact that we'd never work together for fear it could cause problems, but quite the opposite.

"I'd look at him in there, so in control of everything, so creative, and just yelled, 'Please turn the air-con on to make it cooler in here, as I'm seriously hot!'."

Watch Rita Ora's video for 'I Will Never Let You Down' below: