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FILE - In this Dec. 22, 1965 file photo, Claudine Auger, the latest James Bond girl, stars with Sean Connery in the James Bond 1965 film, “Thunderball.” Whatever their role, Bond girls must always be inarguably beautiful. (AP Photo)

The evolution of the 'Bond girl'

Who qualifies as a Bond girl has changed over the years, as the

blue-eyed, buxom blonde has given way to more diverse leading ladies,

including Michelle Yeoh ("Tomorrow Never Dies") and Halle Berry ("Die Another Day"). Modern Bond girls also present a more formidable challenge to the suave secret agent.