Rihanna was injured in London Saturday night, after a heckler threw a bottle at her.  Rihanna was leaving a club when the guy started yelling at her.  Sources say he was upset about her relationship with Chris Brown.

The bottle didn't hit Rihanna, but she fell against a metal grate while trying to avoid it, and cut her leg.  Rihanna's bodyguard tried to chase the guy, but he injured HIS leg, too, and ended up in the hospital.  The suspect got away.