What sketch comedy series that premiered on June 5, 2011 has a character named Tawni Hart?
Tiffany Thornton: Tiffany Dawn Thornton (born February 14, 1986) is an American actress, radio personality and singer best known for her co-starring role as Tawni Hart on the Disney Channel Original Series, "Sonny with a Chance" and the spinoff, "So Random! So Random!: So Random! So Random!:  is an American Disney Channel sketch comedy series that premiered on June 5, 2011. So Random!:  The series features the actors who acted in "Sonny with a Chance", besides Lovato: Tiffany Thornton, Sterling Knight, Brandon Mychal Smith, Doug Brochu, and Allisyn Ashley Arm along with other featured actors who recur in the series.
So Random!