Demi Lovato, DJ Khaled book 20-city concert tour

Oct. 27 (UPI) -- Singer-songwriter Demi Lovato is to kick off her 20-city, North American concert tour Feb. 26 in San Diego.

Hip-hop star DJ Khaled will be a guest performer at the shows, which are scheduled to wrap March 31 in Tampa. Other stops along the way will include Dallas, Las Vegas, Detroit, Brooklyn, Boston, Montreal, Toronto and Miami.

Tickets are to go on sale to the public on Nov. 3.

The tour is to support Lovato's recently released album Tell Me You Love Me, featuring the hit song "Sorry Not Sorry." DJ Khaled is celebrating the success of his own blockbuster album Grateful.