Rihanna has lashed out at vicious internet gossip which suggested ex-boyfriend Chris Brown beat her after she contracted a cold sore on her lip - angrily insisting the blemish is a scar.

Nasty online reports circulated following Brown's attack on the beauty in February last year, alleging Brown lashed out at his then lover after spotting a cold sore on her lip - a sign that can indicate the sufferer has sexually transmitted virus herpes.

And Rihanna is fuming she has to put up with such rumors especially as the alleged cold sore is actually a scar she has had for most of her life.

The star tells GQ magazine, "It's not true. It's a f---ing scar. On my lip. That's there every day of my life."

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(This news article provided by World Entertainment News Network)