Spencer Kayden

Spencer Lemon Kayden (born May 27, 1968) is an American actress, comedian and writer. Kayden played Little Sally in the Broadway musical ''Urinetown'' and was a cast member on sketch comedy series ''MADtv.'' She also voiced Mrs. Pepper on ''Blue's Clues'', taking over the role from Penelope Jewkes after the first season. Provided by Wikipedia