'This Is Us' Shocker: [Spoiler] Is Pregnant!
After a troubling stint in rehab, former Disney star Demi Lovato devoted her life and career to being a positive role model for young women. Much of that has entailed her being overly honest about her past substance abuse.
"I couldn't go 30 minutes to an hour without cocaine, and I would bring it on airplanes," she told Access Hollywood in December 2013. "I would smuggle it basically and just wait until everyone in first class would go to sleep, and I would do it right there."