[1] Foster was born in Lancaster, Lancashire, the daughter of Nicholas, a marine engineer, and Hilda, who ran a dance studio.

[1] In 1965, Foster joined the cast of the new NBC sitcom television series Hank, starring as Doris Royal, the girlfriend of the title character.

[2][1] After the series ended in 1966, Foster guest-starred in television programs including Gunsmoke, The Man from U.N.C.L.E., F Troop, Bonanza, Tom, Dick, and Mary, McHale's Navy, The Virginian, and Rango.

[1] In her film career, she appeared in Honeymoon Hotel, The Ambushers, Marriage on the Rocks, John Goldfarb, Please Come Home!, and Young Fury.

[1] Foster retired in 1983, last appearing in the soap opera television series Dynasty as a journalist in the episode "Tender Comrades".