Rihanna Bloody Knee Result of Crazed Fan

Rihanna had a bottle thrown at her by a crazed fan while in London for London Fashion Week. The incident left her with a bloody knee.

According to the Daily Mail, the pop star was out on the town with model Cara Delvingne and her bestie Melissa Forde. She spent the night partying it up at the swanky The Box. Upon leaving the exclusive nightclub, an unidentified man threw a bottle of Lucozade, a UK energy drink, at the "Diamonds" singer and screamed at her about on-off boyfriend Chris Brown.

During the scuffle, Rihanna was pushed into a wall where she hurt her knee. No word what happened to the stan that attacked her.

Earlier in the day Rihanna had revealed her collection for trendy clothing retailer River Island.