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Demi Lovato's first acting role was as Angela on the popular kid series 'Barney and Friends' from 2002 to 2004. She later went on to star in the Disney Channel 2008 film 'Camp Rock' as Mitchie Torres alongside the popular boy band 'The Jonas Brothers' and again in 2010 for the sequel.
Lovato also starred in her own Disney Channel original series 'Sonny with a chance,' from 2009 to 2011, before departing the series to check into rehab for personal struggles, including an eating disorder, drugs and alcohol and cutting. Lovato emerged from rehab to release the album 'Unbroken,' which featured the hits 'Skyscraper' and 'Give Your Heart a Break.'
In 2012, Lovato joined the judging panel of FOX's 'The X Factor.' In 2013, she released the album 'Demi,' featuring the hit single 'Heart Attack,' as well as returning to 'The X Factor' and making a guest appearance on the hit musical comedy 'Glee.'
(Pictured: Left -- Demi Lovato appears in a still from 'Barney and Friends.' Right -- Demi Lovato appears at 'The X Factor' premiere party on Sept. 5, 2013.)
(HiT Entertainment / Sara De Boer / startraksphoto.com)