She Assaulted One Of Her Backup Dancers

Photo Credit: Demi Lovato / Youtube

Once, in a drug-fuelled rage, Demi attacked one of her backup dancers. The incident happened way back in 2010, and it may have been the catalyst for Demi entering rehab.

Demi talks about the incident in Simple Complicated. She was mad that Alex "Shorty" Welch told her manager that she was taking Adderall. Her secret was out and Demi wasn't happy about that, so she punched Shorty in the face.