In 1962 she married Rex Harrison. They were divorced in 1971. She starred in 1963's This Sporting Life, for which she was nominated for the Academy Award for Best Actress.
Other movies include Our Man in Havana, A Flea in Her Ear, Doctors' Wives, Wild Rovers, O Lucky Man, Murder on the Orient Express, Picnic at Hanging Rock, Yanks and Charlie Chan and the Curse of the Dragon Queen.
Roberts committed suicide by barbiturate poisoning in Los Angeles, California.