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One of the most influential fashionistas of the 20th century is examined in a brand-new, intimate documentary called Diana Vreeland: The Eye Has To Travel, in theaters September 21, and we have an exclusive clip from the film!

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An enduring icon that changed the face of fashion, beauty, art, publishing and culture, Vreeland was known as the "Empress of Fashion." The fashion editor of Harper's Bazaar who became Vogue's editor-in-chief, Vreeland's influence was felt far and wide: She advised Jackie O, launched Twiggy's career and established countless trends that have withstood the test of time.

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Watch the clip, then stick around for the film's trailer…