Tiffany Dawn Thornton (born February 14, 1986) is an American actress, comedian and singer-songwriter best known for her co-starring role as Tawni Hart on the Disney Channel Original Series, Sonny with a Chance and So Random!. Thornton was born in College Station, Texas. She made her television acting debut in the pilot episode of the Fox sitcom Quintuplets. She then went on to appear in 8 Simple Rules, American Dreams, The O.C., Desperate Housewives, That’s So Raven, Jericho, Wizards of Waverly Place and Hannah Montana. In 2009, she began her role as Tawni Hart on the Disney Channel Original Series, Sonny with a Chance and then went on to play a part in the Disney Channel Original Movie Hatching Pete. Sonny With a Chance ended on January 2, 2011 and was replaced by So Random!, which premiered on June 5, 2011, with Thornton in a starring role.