Rihanna was seen 'cutting up' a white substance on the top of a man's head at the Coachella festival over the weekend, and posted the picture on Twitter.
Rihanna posted two pictures of herself on the shoulders of the man, with another close-up shot of the substance on his head.
Fans posted over 1000 comments on the snaps, claiming that the star 'rolled a blunt on that dude's head', referring to marijuana, but others questioned if the substance was cocaine.
One fan questioned: 'Is that weed or coke?', while others commended her for being so open, saying: 'Priceless I love this girl'.
Not one to shy away from controversy, Rihanna, who has recently completed a promotion tour for her new film Battleship, posted on her Twitter account soon after: 'I'm crazy and I don't pretend to be anything else.'
Rihanna's controversial picture comes after the singer was pictured earlier this year smoking what appeared to be marijuana on holiday in Hawaii.