Celebrity ex present: Katy Perry
Celebrity ex present - Russell Brand?
While Rihanna was probably avoiding ex Chris Brown, Katy Perry didn't have to worry about coming face to face with her ex Russell Brand. He was last spotted out and about in LA but was not at the Grammys. Good thing too, really, as her poignant routine might have just about taken it out of him.
Rihanna - 2
Katy Perry - 3