Eldest child of Frank Sinatra who enjoyed a decade of fame beginning in the early 1960s, in which her combination of toughness and kittenish sexiness prefigured such later pop singers as Linda Ronstadt, Pat Benatar and Madonna. Although one of her biggest hits was a sweet, playful duet with her father ("Somethin' Stupid"), Sinatra's best-known single remains her first big hit, the acoustic bass-driven, quasi-feminist "These Boots Are Made for Walkin'". Compensating for her modest vocal range with a smooth, dusky alto and a good-humored, insinuating delivery, she hit the top 40 ten times from
