Rihanna swept the first ever iHeartRadio Awards in Los Angeles, in a low-key show that gave fan favorites on the radio their proper due. The Barbadian singer appeared in a lacy see-through dress to accept her four prizes, including song of the year for "Stay," hip-hop/R&B song of the year for "Pour It Up," best fan army for her so-called "Navy" of fans, and the biggest prize of the night, artist of the year.<br/> <br />Other big winners included Miami rapper Pitbull, who won for best collaboration with Kesha on the song "Timber," and Pharrell Williams, who picked up the "Innovator" award.<br/> <br />Also debuting at the awards show was a new single from Michael Jackson. Usher danced to the tune, called "Love Never Felt So Good" - which was originally written and recorded by Jackson in 1983. The song will be part of a posthumous album which debuts on May 13 and will include eight previously unreleased songs that Jackson recorded between 1983 and 1999.<br/> <br />Britain's Prince William and Prince
