Demetria Devonne Lovato ( lə-VAH-toh; born August 20, 1992) is an American singer and actress. After appearing on the children's television series Barney & Friends (2002–2004), she rose to prominence for her role as Mitchie Torres in the Disney Channel musical television film Camp Rock (2008) and its sequel Camp Rock 2: The Final Jam (2010). The former film's soundtrack included "This Is Me", Lovato's duet with Joe Jonas, which became a top-ten single on the Billboard Hot 100.
After signing with Hollywood Records, Lovato released her pop rock debut album, Don't Forget (2008), which debuted at number two on the Billboard 200. Its follow-up, Here We Go Again (2009), debuted at number one in the US, while its title track peaked in the top 15 of the country. Lovato's third studio album, Unbroken (2011), experimented with pop and R&B. It spawned two singles: "Skyscraper", which peaked in the top ten of the US, and "Give Your Heart a Break", which became her first number-one single on the Mainstream Top 40 chart. Lovato's fourth studio album, Demi (2013), debuted with US sales of 110,000 copies, her highest first-week sales in the country. Its lead single, "Heart Attack", peaked in the top ten of the US, while also becoming her first top-three single on the UK Singles Chart. For her fifth and sixth studio albums, Confident (2015) and Tell Me You Love Me (2017), Lovato infused soul and focused on more mature content as opposed to her previous work. The former granted Lovato her first Grammy Award nomination, while the latter became her first album to be certified Platinum by the RIAA, and its lead single, "Sorry Not Sorry", became her highest-charting single in the US, reaching number six.
On television, Lovato starred as the titular character on Sonny with a Chance (2009–2011), served as a judge and mentor on The X Factor USA in its second and third seasons, and appeared as a recurring character on Glee. Her struggles with personal issues received significant media attention in the 2010s, in response to which she published a book, Staying Strong: 365 Days a Year (2013), and released YouTube documentaries about her life and career, Demi Lovato: Simply Complicated (2017) and Demi Lovato: Dancing with the Devil (2021).
As of 2017, Lovato has sold over two million albums and 20 million singles in the United States, according to Billboard. She has received numerous accolades, including an MTV Video Music Award, 14 Teen Choice Awards, five People's Choice Awards, and two Latin American Music Awards. She also holds one Guinness World Record and was also included on the Time 100 annual list in 2017. Outside of the entertainment industry, Lovato is an activist for several social causes.
