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.
For thirteen years, from 1955 - 1968, the group appeared regularly on The Lawrence Welk Show, receiving union scale wages. Although the original quartet was composed of the eldest sisters, in 1999, younger sister Mimi (b. 16 October 1955- Miriam Theresa) replaced Peggy upon her retirement. Dianne has also since retired. The current line-up of the Lennon Sisters is now a trio consisting of Mimi, Janet and Kathy. They continue to tour around the country and appear annually with their Christmas show at The Andy Williams Moon River Theatre in Branson, Missouri.
The Lennon Sisters were 2001 inductees of the Vocal Group Hall of Fame.