Olivia Wilde on 'Rush' Wardrobe Transformation

In the upcoming racing drama Rush, Olivia Wilde takes on the role of Formula One racer James Hunt's wife, Suzy Miller, which required not only a change in her voice but an elaborate wardrobe as well.

As a fashion aficionado, Wilde enjoyed the process of transforming into a '70s woman, particularly a fashionable one like Miller.

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"All of us were transforming into these '70s creatures," said Wilde, who picked the hats as her favorite piece of the wardrobe. "I mean, Chris Hemsworth looked much like James Hunt it was creepy."

Echoing the thoughts of his on-screen lover, Hemsworth said the wardrobe helped him get into character and have a better vibe for the era of the period film.

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"The '70s flares and the big open-neck shirts and big popped collars, that instantly indicated 'This is where we are,'" Hemsworth said.

Watch the video above for a look at the fashion of Rush, which is in theaters September 27.