Sparv was born in Stockholm, Sweden on 3 June 1943. She was awarded a Golden Globe as Most Promising Newcomer (female) in 1967 for her role opposite James Coburn in Dead Heat on a Merry-Go-Round (1966). She also appeared in such films as Murderers’ Row (1966), The Trouble with Angels (1966), Assignment K (1968), Nobody Runs Forever (1968), Mackenna’s Gold (1969), Downhill Racer (1969), The Greek Tycoon (1978), Caboblanco (1980), and Survival Zone (1983), as well as the television shows Airwolf, The Rockford Files, The Love Boat, Hawaii Five-O and the miniseries Jacqueline Susann’s Valley of the Dolls (1981). In 1977, she appeared in “Never Con a Killer,” the pilot for the ABC crime drama The Feather and Father Gang. She played several roles in movies, such as beauty girls on snow or skis.
Sparv was briefly married to American film producer Robert Evans in 1965. Now retired, Sparv had two children by her second husband, Herbert W. Hoover III, and has been married to her third, Fred Kolber, since June 1994.