Demetria Devonne Lovato ( lə-VAH-toh; born August 20, 1992) is an American singer, songwriter, and actress. After appearing on the children's television series Barney & Friends as a child, she received her breakthrough role as Mitchie Torres in the Disney Channel television film Camp Rock (2008) and its sequel Camp Rock 2: The Final Jam (2010). The former film's soundtrack included Lovato's debut single, "This Is Me", which peaked in the top ten on the Billboard Hot 100.
She signed with Hollywood Records and released her debut studio album Don't Forget in 2008; the album debuted at number two on the Billboard 200. In 2009, she released its follow up Here We Go Again, which became her first album to reach number one on the Billboard 200. With the release of her third studio album, Unbroken (2011), Lovato sang about her personal struggles, and incorporated more elements of R&B into her music. The album contained two singles: "Skyscraper", which peaked at number ten on the Billboard Hot 100, and "Give Your Heart a Break", which peaked at number sixteen. Her fourth studio album, Demi, was released in 2013 and experimented with synthpop. The album's lead single, "Heart Attack", peaked at number ten on the Billboard Hot 100.
After founding Safehouse Records in 2015, she released her fifth studio album, Confident, later that year. The album became a major breakthrough in her career, as it garnered her first Grammy Award nomination, and was distinguished for its mature themes. The album's lead single, "Cool for the Summer", peaked at number 11 on the Billboard Hot 100. She followed this with the soul-influenced album Tell Me You Love Me (2017), which peaked at number three on the Billboard 200, while its lead single "Sorry Not Sorry" became her highest charting single, reaching number six on the Billboard Hot 100.
Outside of music, Lovato's television credits include starring as the titular character on Sonny with a Chance, and she featured as a judge and mentor on the U.S. version of The X Factor. Lovato also appeared as a recurring character on Glee. She has been subject of significant media attention due to her struggles with bipolar disorder, addiction, an eating disorder, and self-harming, in response to which she published the book Staying Strong: 365 Days a Year in 2013. In 2017, her life and career were chronicled in the documentary Demi Lovato: Simply Complicated.
Lovato is a pop, pop rock, and R&B artist. She has won numerous awards and accolades, including an MTV Video Music Award, 13 Teen Choice Awards, five People's Choice Awards, an ALMA Award, and a Latin American Music Award. Lovato was cited for her dedication as a mentor to teens and young adults with mental health challenges at a National Children's Mental Health Awareness Day event, and became the public face for the Human Rights Campaign's Americans for Marriage Equality Campaign. She has also been honored with the GLAAD Vanguard Award for her services to LGBT activism.