There's lots to say about Rihanna, but camera shy isn't one of them. From topless to bottomless, this S&M singer has shared (and bared) it all through the years! We look back at her most jaw-dropping, scandalous shots.First up, the pop star's Brazilian vacation led to some racy images. On Jan. 21, 2014, the S&M singer posed in nothing but her bikini bottoms and belly chain while on the edge of a boat. Click the pics for more jaw-dropping shots of the birthday girl.