Kathy Lennon made her debut on The Lawrence Welk as part of “The Lennon Sisters” on Christmas Eve 1955 with sisters Peggy, Dee Dee, and Janet. The quartet’s high school classmate, Larry Welk, son of Lawrence Welk brought them to the attention of his father. Welk who was sick in bed at the time, was so impressed that he immediately booked them for that week's show.