She was departing a club called The Box when someone threw a bottle of Lucozade (a UK energy drink) in her direction. The bottle itself didn’t connect, fortunately.
Rihanna scraped her knee during the commotion, however, when she looked to hasten her getaway from the scene and brushed up against a metal grate.
Her boyfriend(s) know a thing or two about flying bottles.
Speaking of, it was an interesting week for Rihanna and Chris Brown, to say the least. After their Grammy Awards love-fest, they appeared to be back on and stronger than ever