The Lennon Sisters are an American vocal group initially consisting of four of the six sisters from a family of 11 siblings -- 6 girls, 5 boys: Dianne Barbara (a.k.a. DeeDee) (b. 1 December 1939), Peggy (Margaret Anne) (b. 8 April 1941), Kathy (Kathleen Mary) (b. 2 August 1943), and Janet (Janet Elizabeth) (b. 15 June 1946). All 11 Lennon children were born in Los Angeles, California.