One of two daughters of Army Col. Claude Augustus Billingsley, she was born in Honolulu, Hawaii,[2] and relocated often as an "Army brat," attending schools in Vienna and Chicago,[3] and graduating with honors from Fort Smith Senior High School in Arkansas.

[3][5] Her film debut came as James Caan's girlfriend in the 1964 thriller, Lady in a Cage, and she appeared in the romantic drama, The Young Lovers that same year.

and Company (1970), Brute Corps (1971), Welcome Home, Soldier Boys (1972), White Lightning (1973), The Thirsty Dead (1974) and Hollywood Man (1976).

Billingsley's guest spots on TV included Cimarron Strip, Naked City, Gunsmoke, Route 66, The Adventures of Ozzie and Harriet, Dr. Kildare, The Lieutenant, Wagon Train, The Man from U.N.C.L.E., Mannix, The F.B.I., Hawaii Five-O, Police Story, Alice, Baretta, and The Amazing Spider-Man.

Billingsley was married to musician Jesse Lee Kincaid, who played classical guitar and composed music.