The original group consisted of the four oldest sisters of the Lennon family: Dianne, Peggy, Kathy, and Janet
Made their debut on "The Lawrence Welk Show" on Christmas Eve 1955 and recorded their first hit song, "Tonight You Belong to Me" the following year
Quote: "(Dianne on the group): "We enjoyed being together and singing together․․․This was an occupation and it fell into our laps and we did the best we could․ We were proud of it․""
Best known as a traditional pop vocal group whose hit songs include "My Favorite Things" and "Tonight You Belong to Me․"
Got their own musical variety series, "Jimmy Durante Presents the Lennon Sisters," on ABC in 1969
Although Dianne and Peggy have retired, Kathy and Janet continue to perform with their younger sister, Mimi
Wrote an autobiography, "Same Song, Separate Voices," in 1985 and appeared in a documentary by the same name in 2011