Rihanna was snapped with a mysterious white powder at the Coachella Festival.

The pics on Twitter showed Rihanna sitting on her bodyguard's shoulders, and she was "fiddling" with a pile of white powder on top of the man's head.
Rihanna hasn't confirmed what the white powder was, or wasn't.
She did Tweet a message after the rumors started and wrote: "I'm crazy, and I don't pretend to be anything else."