Doing what she does best (aside from performing!)... posing in a bikini AGAIN! #NotComplaining This image appears in the gallery:Hottest Lady In Pop? Check Out Rihanna's 25 SEXIEST Ever Pictures 15. Doing what she does best (aside from performing!)... posing in a bikini AGAIN! #NotComplaining Picture: Instagram 25 images See the full gallery: Hottest Lady In Pop? Check Out Rihanna's 25 SEXIEST Ever Pictures