Rihanna lashed out on Twitter after claiming she was racially abused in a Portugal hotel by 'the most racist' man in Lisbon over the weekend.

Rihanna had just wrapped up her show at the city's Pavilhão Atlântico, when she retreated back to her hotel to run into the rude man.

"I just met the most racist c**t EVER!!! This man said the craziest s**t about black women - called us dogs, sl**s, we don't look like s**t, we don't belong in the same hotels."

Check out more of Rihanna's tweets: