Nancy Sinatra began her career as a singer and actress in November 1957 with an appearance on her father's ABC-TV variety series, but initially achieved success only in Europe and Japan.
In early 1966 she had a transatlantic number-one hit with "These Boots Are Made for Walkin'".
She appeared on TV in high boots, and with colorfully dressed go-go dancers, creating a popular and enduring image of the Swinging Sixties.
The song was written by Lee Hazlewood, who wrote and produced most of her hits and sang with her on several duets, including "Some Velvet Morning".
In 1966 and 1967, Sinatra charted with 13 titles, all of which featured Billy Strange as arranger and conductor.
Sinatra also had a brief acting career in the mid-1960s, including a co-starring role with Elvis Presley in the movie Speedway, and with Peter Fonda in The Wild Angels.
In Marriage on the Rocks, Frank and Nancy Sinatra played a fictional father and daughter.