Rihanna has created controversy after posting a picture on Twitter which appeared to show her with a pile of white powder.
The R&B singer was sitting atop the shoulders of one of her minders at the time the snap was taken, at the Coachella music festival in California.
According to MTV, when fans looked at a close-up of one of the images she put up on Twitter they were amazed to see her fiddling with what appeared to be a pile of powder on top of her minder's shaved head, however the image was not clear enough to be certain.
Rianna has not commented directly, but simply tweeted: "I'm crazy, and I don't pretend to be anything else."
