Lovato, whose hits include Heart Attack and Give Your Heart a Break, will perform July 20 at the Paso Robles Event Center.
She joins an entertainment lineup that includes pop-rock band Train, country rocker Kid Rock, country groups Lady Antebellum, Florida Georgia Line and Zac Brown Band, and classic rock bands Doobie Brothers, Journey and Steve Miller Band.
As an actress, Lovato is best known for her roles on Sonny with a Chance and the Camp Rock movies, as well as her stint as a judge on the reality competition The X Factor. Shes also the author of the best-selling book Staying Strong, 365 Days a Year, which was inspired by her struggles with bipolar disorder, bulimia and drug and alcohol addiction.
Tickets for the July 20 concert are $26 to $71 and
Also playing at the Chumash Grandstand Arena is Beatles tribute band The Fab Four, which performed at the fair in 2011. Their July 19 concert is free with fair admission.
The California Mid-State Fair runs July 16 through 27 at the Paso Robles Event Center. For more information, call 239-0655 or visit www.midstatefair.com.