Born in Rome, Bianchi was the 1st runner-up in the 1960 Miss Universe contest, where she was also voted Miss Photogenic by the press. Her film career began in 1958. In From Russia with Love her voice was dubbed by Barbara Jefford. She was the youngest actress (age 21) to play a Bond girl prior to Alison Doody (age 18 in A View to a Kill). But, she still remains the youngest actress to play a "leading" Bond girl.
She made a number of French and Italian movies after From Russia with Love, the last being Scacco Internazionale in 1968. One of her later films was Operation Kid Brother (also known as OK Connery and Operation Double 007), which was a James Bond spoof filmed in English (though Bianchi was again dubbed) and starring Sean Connery's brother, Neil Connery. Her only role in an American production was in the Dr. Kildare three-part story "Rome Will Never Leave You." In 1970, she retired from acting to marry a Genoan shipping magnate, with whom she has a son.