Christina Grimmie Fends Off Justin Bieber, Rihanna in My YouTube Contest

Unsigned singer/pianist Christina Grimmie's story may have started as a small child with a karaoke machine, but over the last year and half, it's found an audience through YouTube.Grimmie is overtaking her big-name competitors -- including Justin Bieber and Rihanna -- in the My YouTube contest. As of Feb. 2, the 16-year-old held the lead with 153,000 fan votes. Next up was Selena Gomez, with