Child-actress-turned-songstress Demi Lovato began her long career (and she’s only 20!) singing that can’t-get-it-out-of-your-head-no-matter-your-age “I Love You” song on Barney & Friends (fun fact: gal pal Selena Gomez was also a cast member, and they’re still best pals). From there, Demi’s track showed no signs of slowing, beginning with a starring role in Disney’s Camp Rock musicals (also starring the Jonai). Signed to Hollywood Records in 2008, Demi (short for Demetria, natch) released Don’t Forget that same year, and it was certified gold soon after. Her own show, Sonny with a Chance hit the Disney Channel airwaves the following year, pushing Demi into the realm of Disney powerhouses.
Unfortunately, what comes up must come down. Personal struggles dotted Demi’s 2011, causing a career hiatus and a stint in rehab. Demi channeled these struggles into 2011’s Unbroken, and has since risen like a phoenix from the ashes. She’s currently a judge on The X Factor, helping to mentor the stars of tomorrow, and her fourth album, Demi, was released in 2013.