Rihanna's Nipples at the AMAs
Rihanna kept her bondage streak going at the AMAs last night, with a black leather dominatrix outfit, complete with nipple spikes. Later she accentuated them with matching crystal awards. We're not sure if there's a nipple slip in there or not, click to enlarge...

Rihanna's Boobs at the VMA's
Nipple Slips on the Red Carpet
Britney's Nipple at the Grammys

Images via Just Jared!