Occupation: Musician, actress
Biggest accomplishment this year: Winning her seventh Grammy Award for her "We Found Love" music video
Never one to shy away from the spotlight (or controversy), Rihanna has once again done it big in 2013. She kicked off the year by getting back together with Chris Brown, a runaway favorite in the battle for worst human being on the planet. Fortunately they broke up again, this time without incident. Even while stirring the pot with her personal life, Rihanna has continued to enjoy huge success in her career; she took home her seventh Grammy award in February, and also debuted her own fashion line during London Fashion Week. She'll also be returning to the big screen next month, playing herself in a small role in the apocalypse-comedy This Is The End.