The Jonas Brothers have gone solo (or, um, serious) with their musical careers. Miley Cyrushas been caught on video smoking funny stuff and speaking in tongues. Demi Lovato has done a very public stint in rehab for various unpretty issues. That pretty much leavesSelena Gomez as the last hope for the Disney entertainment machine. And so far, she hasn't let down the brand's squeaky-clean image. As the star of the series The Wizards of Waverly Place and various, largely princess-themed movies, Gomez is pretty, perky, and inoffensive.