Nancy Sandra Sinatra (born June 8, 1940) is an American singer, actress, film producer, and author. She is the elder daughter of Frank Sinatra and Nancy Sinatra (née Barbato) and is known for her 1966 signature hit "These Boots Are Made for Walkin'". Nancy Sinatra began her career as a singer in November 1957 with an appearance on her father's ABC television variety series The Frank Sinatra Show, but initially achieved success only in Europe and Japan. In early 1966,... [more on Wikipedia]