Rihanna has hit out against claims that her February fight with Chris Brown took place because she gave him an STD.

Internet rumours after the attack suggested she had some kind of infection around her mouth.

But Ri’ told the new issue of GQ Magazine: “It's not true. It’s a f***ing scar. On my lip. That's there every day of my life.

It's ignorant. At first I was like: 'Are you serious?' - I thought people were gonna definitely know that that's not…”

The Wait Your Turn star appears topless on the cover and inside the new issue of the mens mag.