Rihanna's Hit Parade

From 'SOS' to 'Diamonds,' hear the pop star's biggest tunes

Rihanna has been behind some of pop's biggest tunes over the last six years, from 2006's "SOS" to "Diamonds" from her latest disc, Unapolagetic. Hear 10 of her biggest songs, from the bombastic dance floor hits to the shadowy R&B cuts: