Demetria Devonne "Demi" Lovato (born August 20, 1992) is an American singer-songwriter, musician, actress, and anti-bullying spokesperson who rose to international stardom following her starring role in the 2008Disney Channel Original Movie, Camp Rock. Prior to her major breakthrough, Lovato had a recurring role as Angela in the children's television program, Barney and Friends. She made her debut on the Disney Channel short series As the Bell Rings in 2007.
She is good friends with the Jonas Brothers (who also started in Camp Rock and Camp Rock 2), and dated Joe Jonas for a time in 2010. She toured with them in 2008 and 2010 and appeared in their concert movie Jonas Brothers: The 3D Concert Experience. They also co-produced her first album Don't Forget and wrote and co-wrote several of the album's songs. She auditioned for a role on their television series Jonas, but did not get the part. On July 18, 2012, Nick Jonas joined her in Los Angeles on stage at the Greek Theatre during her Summer Tour 2012 and performed the songs Don't Forget and Catch Me with her.
Lovato starred in in her only Disney Channel Original Series as Allison "Sonny" Munroe in Sonny with a Chance. In 2011, Lovato departed from the show. In October 2010, she punched a background dancer on the Jonas Brothers tour and in November, she checked herself into a treatment center dealing with physical issues and an eating disorder. In 2011 she released an album called Unbroken about her struggles. She is currently on tour.
She returned to Disney in 2013 to perform the single version of "Let it Go" for the animated feature, Frozen. She also played Hayley May in the Grey's Anatomy episode "Shiny Happy People".