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This undated publicity photo provided by United Artists and Danjaq, LLC shows Jill St. John from the James Bond 1971 film, "Diamonds Are Forever." Initially, Bond girls were part of the aesthetic of the series. They had more transient roles. The film is included in the MGM and 20th Century Fox Home Entertainment Blu-Ray "Bond 50" anniversary set. (AP Photo/United Artists and Danjaq, LLC)

The evolution of the 'Bond girl'

November 29, 2012

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.