Born in Sydney, Harris was a student at the National Institute of Dramatic Art.

Harris appeared in The Greek Tycoon (1978), Rough Cut (1980), and the James Bond film For Your Eyes Only (1981)[1] as the Countess Lisl von Schlaf, the ill-fated mistress of Milos Columbo (played by Israeli actor Topol).

While filming this movie, her third husband, Pierce Brosnan, met producer Albert R. Broccoli.

He was supposed to take over from Roger Moore after impressing Broccoli in his role in the TV series Remington Steele.

She guest-starred in several episodes of the television series Remington Steele with Brosnan; they married on 27 December 1980.