8. Rihanna -- Probably our favorite choice on the list, it's no question that Rihanna's quite the stunner. This year she's gotten through a flurry of controversies with her ex Chris Brown (we're hoping), and come out with even more flair, sass, and 'tude than ever before. Even though nude pictures that recently leaked on the Internet (darned that Internet, always leaking naked photos), we're not worried. I have a feeling Rihanna will rise above, and continue to make hot singles that I'll put on repeat and belt out while driving in rush-hour traffic.