'Pour It Up' is one of RiRi' most controversial videos... and it's not hard to see why! This image appears in the gallery:Hottest Lady In Pop? Check Out Rihanna's 25 SEXIEST Ever Pictures 5. 'Pour It Up' is one of RiRi' most controversial videos... and it's not hard to see why! 25 images See the full gallery: Hottest Lady In Pop? Check Out Rihanna's 25 SEXIEST Ever Pictures