While Frank Sinatra's legacy as one of the most legendary entertainers of the 20th century remains hard to beat, of all his offspring, it's his daughter Nancy who's come closest to matching his own.
The actress and singer, officially 86 as of June 8, began her career as a teen star of her dad's variety shows, before breaking into music and acting.
Her 1966 hit "These Boots Are Made For Walkin'" remains her signature six decades later, although taking a walk down memory lane uncovers the star's knack for taking some truly iconic (and very '60s) pin-up shots.
From film stills to concert promotional photos, in honor of her big day, we're taking a look at some of Nancy Sinatra's most timeless pin-up photos…
© Getty Images'60s Neon
Nancy sporting signature '60s neon highlighter. Honestly, groovy!
© Getty ImagesSwingin' Style
The psychedelic, trippy style of the decade was perfectly evident in a promotional shot for her TV series Movin' With Nancy.
© Getty ImagesThe boots made for posing
In a shot taken in 1968, Nancy truly cemented boots as her signature.
© Getty ImagesTo the pages of magazines
Nancy featured wearing a silk white sarong for a feature in Vogue in 1968
© Getty ImagesSwitch-up
By the end of the decade, Nancy started sporting darker locks, opting for a slightly more brunette take on her usual style.
© Getty ImagesFrom the film set
Nancy pictured for a 1964 promotional shot for the film Get Yourself a College Girl.
© Getty ImagesMaking changes
By 1970 (when this shot was taken), Nancy was on the verge of exiting her record deal with Reprise to move to the higher-profile RCA the year after.
© Getty ImagesA new decade, a new perspective
By the mid-1970s, Nancy had moved on from music and ceased acting to devote more time to her family.
