Most Controversial – Miley Cyrus, Adam Lambert, Demi Lovato

3. Demi Lovato

WEST HOLLYWOOD, CA - SEPTEMBER 29: Demi Lovato arrives at 'The Autumn Party' presented by ARCADE Boutique at The London Hotel on September 29, 2010 in West Hollywood, California. (Photo by Jason Merritt/Getty Images)

Demi Lovato always seemed like such a good girl – until recently. The year was going well for Demi, but shortly after being dumped by Joe Jonas things went a bit wrong.

She’s always said she wouldn’t go off the rails, but even the good girls lose their way. Demi checked herself into rehab for emotional issues, people claimed she did drugsĀ and called her slutty, and then photos hit the net of a backing dancer who alleged that Demi hit her in the face on a private yet.

Demi has been allowed out of rehab over the holidays and is hopefully getting back on track.