Does demi lovato play Sonny in With a Chance season 3?

No, Demi Lovato does not play Sonny in season 3 of With a Chance. The character of Sonny was portrayed by Demi Lovato in seasons 1 and 2 of the series. In the third and final season, the show was retitled So Random! and focused on the show-within-a-show, So Random!, rather than the characters' personal lives. Tiffany Thornton, who played Tawni Hart in the first two seasons, became the main character of the third season.