The Lennon Sisters are an American vocal group initially made up of four sisters from a family that had seven sisters in all (including infant Mary Frances, March 5, 1953 – June 20, 1954) and five brothers. The original quartet consisted of Dianne (born Dianne Barbara; aka DeeDee; December 1, 1939), Peggy (born Margaret Anne, April 8, 1941), Kathy (born Kathleen Mary, August 2, 1943), and Janet (born Janet Elizabeth, June 15, 1946). All 12 Lennon children were born in Los Angeles, California.
For thirteen years, from 1955 to 1968, the group appeared regularly on The Lawrence Welk Show (receiving union scale wages) before having their own television variety show called Jimmy Durante Presents the Lennon Sisters with Jimmy Durante. After their show was cancelled, they partnered with Andy Williams to create a successful Las Vegas residency, which lasted a decade. In 1999, younger sister Mimi (born Miriam Theresa, October 16, 1955) replaced Peggy upon the latter's retirement. DeeDee has also since retired. The current line-up of the Lennon Sisters is a trio consisting of Kathy, Janet, and Mimi. 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 into the Vocal Group Hall of Fame.