Nancy Sandra Sinatra (born June 8, 1940) is an American former singer and actress. She is the elder daughter of Frank Sinatra and Nancy Sinatra (née Barbato), and is best known for her 1966 signature hit "These Boots Are Made for Walkin'". Between 1964 and 1968 Sinatra appeared in several feature films, co-starring with Peter Fonda in Roger Corman's biker-gang movie The Wild Angels (1966) and alongside Elvis Presley in the musical drama Speedway (1968). Frank and Nancy Sinatra played a fictional father and daughter in the 1965 comedy Marriage on the Rocks.