She spent most of the '60s and '70s performing with her parents and brothers in the Webb Family; when she was 12, her father's ailing health forced him to retire and the large family moved to Indiana, where Peggy Sue attended high school and sang with her two sisters as the Loretta Lynn Sisters. Much later, she became a featured act in Loretta's show and the two wrote songs together, including "Don't Come Home A-Drinkin' (With Lovin' on Your Mind)." Peggy Sue made her solo recording debut in 1969 with "I'm Dynamite," a song written for her by Loretta. The song hit the Top 30, as did the single "I'm Gettin' Tired of Babyin' You" the following year. After her most successful single, "All-American Husband," she didn't appear on the charts again until 1980, with a string of mid-range hits for her second husband Sonny Wright's independent Door Knob label such as "I Want to See Me in Your Eyes." By 1983, the hits dried up. Peggy Sue later sang backup for her sister Crystal Gayle and designed stage costumes. ~ Sandra Brennan