Just voted the Favorite Female Singer at the Nickelodeon Choice Awards, this Mickey Mouse Club alum holds the record for being the first artist in Billboard history to have a single and an album of the same name go to number one on the charts simultaneously. Her popularity is exploding, as evidenced by: -- TV appearances on Rosie O'Donnell, Saturday Night Live, The Tonight Show, MTV's First Listen, Nickelodeon's All That-- Graced the cover of Forbes...