Rihanna, the 23-year-old Barbadian singer has the biggest fan following on Facebook. She recently toppled Lady gaga on the Facebook fan following. The pop-star debuted in 2005, with her album, Music of the Sun, which peaked in the top ten of the Billboard 200 chart and features the Billboard Hot 100 hit single Pon de Replay.

In just less than a year, her second album A Girl Like Me was again a major hit. Among her other awards is the Grammy, which she won for Best Rap/Sung Collaboration for Umbrella, featuring Jay-Z.

Rihanna has sold more than 20 million albums and 60 million singles which makes her one of the best selling artists of all time. She is the youngest artist in Billboard charts history to achieved ten number-one singles on the Hot 100.

Rihanna made headlines when her ex-boyfriend Chris Brown assaulted her physically and got her fans really outraged. Her latest release was 'Loud' that was released in November 2010. Her latest international single was Man Down which was released in Europe in July 2011. She is rumored to be currently dating Canadian recording artist and actor Aubrey Drake Graham.