Rihanna is no stranger to controversial photos!

The "Umbrella" singer posted two photos from her wild weekend in Coachella ... one of her sitting on top of a man's shoulders and the other showing a white substance on the guy's head.

RiRi shared the photos and the following, "Memories don't live like people do #coachella."

The 24-year-old songstress has since removed the controversial photos from Instagram. However she did post, "I'm crazy and I don't pretend to be anything else."

She's definitely an open book!