Check out the NY Daily News site for an article called "Some teen stars are still well-scrubbed, others have gone wild".
In the article they mention some of the stars that are still good examples like Miranda Cosgrove, Selena Gomez, and the Jonas Brothers.
The writer has the following to say about the Jonas Brothers:
THE JONAS BROTHERS Hot on the heels of Miley's pop success, the Jonas Brothers - Kevin, 20, Joe, 18, and Nick, 15 - beat out less kid-friendly Linkin Park and Fall Out Boy to claim the Kids Choice Award for Favorite Music Group last month. Closely managed by dad, Kevin, the wholesome Wyckoff, N.J., brothers are performing on a 140-date tour and have a movie, "Camp Rock," ...