They may have started in family-friendly fare, but they've moved on to more adult projects.
Demi Lovato
While she got her start as a kid on Barney & Friends, Demi Lovato became a Disney star when she landed the lead role in the Jonas Brothers movie Camp Rock. She soon got her own Disney sitcom, Sonny With a Chance.
Image by Disney
Now:
Lovato began appearing in the tabloids in 2010 after punching a back-up dancer and entering a treatment facility for issues that included bulimia, self-harm, and drug and alcohol abuse. Since her recovery, she's focused more on her music. In 2012, she became one of the new hosts of The X Factor.
Image by Frazer Harrison / Getty Images
Miley Cyrus
The daughter of country star Billy Ray Cyrus, Miley first stepped into the title role of Hannah Montana in 2006. The show was a huge success, spawning soundtracks and films, including the concert film Hannah Montana and Miley Cyrus: The Best of Both Worlds and Hannah Montana: The Movie.
Image by Disney
Now:
"I'm sorry I'm not perfect," Miley has said following controversies including a photo of her smoking salvia from a bong, a pole dance at the Teen Choice Awards, and her assertion that a Bob Marley-themed birthday cake means "you know you smoke way too much fuckin' weed." She's also taken on more adult roles in films like The Last Song and LOL.
Image by Jamie McCarthy / Getty Images