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Demetria Devonne Lovato (born August 20, 1992) is an American singer-songwriter and actress who is currently a judge on X Factor USA. She first gained notice after appearing in the Camp Rock movies opposite the Jonas Brothers as well as her own Disney show Sonny with A Chance. She also co-starred opposite her good friend Selena Gomez in the Disney Channel movie Princess Protection Program.
Lovato announced on December 18, 2013 that she would not be returning to the show.
In addition to her work on the show, Lovato recently released her latest single, "Heart Attack", on February 25, 2013. The song, which became a top 10 hit, is from her fourth album, Demi, which was released on May 14, 2013. She will be hitting the road for the Neon Lights Tour on February 9, 2014 in Vancouver, Canada. Fifth Harmony, British singer Cher Lloyd, and the British girl group Little Mix will opening for her on the tour. She has also returned to acting, having taken on a guest-starring role on the hit FOX show Glee.