Sounds like Katy Perry isn't the only one ticked off at Rihanna for getting back together with Chris Brown. The singer was confronted by an angry stranger as she was leaving a nightclub in London. The man started screaming at her for rekindling her romance with Chris and then threw a bottle causing her to fall against a shop grate and cut her knee. Poor girl! The singer, who was at London Fashion Week for the debut of her River Island collection, received mixed reviews on the line. In the end though, we're just happy to hear that she wasn't seriously hurt!