The Lennon Sisters are an American vocal group that has been made up, at one time or another, of three or four sisters. The quartet originally consisted of Dianne, Peggy, Kathy, and Janet.
Lennon Sisters in 1971 (top) and in 1955. 1971, from left: Kathy, Janet, Peggy and Dianne; 1955, from left: Janet, Kathy, Peggy, and Dianne