World's one of the most sexiest and wild R&B singer Rihanna turns 26. The 'Umbrella' hitmaker has given new heights to the world of music with her chart-bursting scores. Take a look at Rihanna's most controversial images...Born as Robyn Rihanna Fenty to mother Monica Braithwaite and father Ronald Fenty in Barbados, Rihanna is world's fourth most powerful celebrity of the year. She began singing at a tender age of seven and formed a musical trio with two of her friends. Her career saw its sunshine towards late 2003, when she auditioned for American record producers Carl Sturken and Evan Rogers. Her impressive musical caught the duo's immediate attention.Rihanna has not only vouched her fan's love and affection through her music but also her love for them. The sexy lad is often seen sharing revealing selfies, and racy pictures with her fans through her social networking accounts Instagram and Twitter.One moment you'll find her deeply engulfed in her music and the next moment you'll see her posing in a barely-there thong. Besides being a fun-loving singer, Rihanna too had her shares of sorrows. She was romantically involved with another star Chris Brown, but the couple broke up soon after Rihanna's pic of her face covered with deep bruises caused by Brown went viral.Since her separation with Chris Brown, Rihanna has been living her life like a princess and has been often caught enjoying holidays back at her hometown. Rihanna is famous for posting racy selfies. In this pic on the left side, Rihanna is seen with ex-beau Chris Brown's head between her thighs, while in the second pic she can bee seen with a stripper in a bar, as she enjoys a night with her closed pals.Rihanna adorns herself, and this can be easily seen as she flaunts her curvaceous body in monokini's and bikinis. Rihanna posted some of her her pics lately on her Instagram account.