This might be surprising to learn, but Demi Lovato‘s earliest role was on “Barney & Friends.” From there, she became a Disney star, which helped launch her singing career.

But life took a sad turn when she had to cancel her tour to enter rehab to get treatment for bulimia and self-injury habits. And after racy photos of her posing with some girlfriends showed up on the Internet, Lovato entered treatment for depression and bipolar disorder.