Diana's "Pretty Woman moment" was engagement dress shopping.

Diana's fashion career began on February 24, 1981, when she and Prince Charles announced their engagement.

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Diana's cobalt blue skirt suit for the event was a last-minute choice she made while shopping at Harrods in the evening.

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Diana went to another store earlier that night to find an engagement dress, but a salesperson didn't recognise her and turned her away.

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In a "Pretty Woman" moment, Diana's assistant got tired of waiting for her and told her to go to Harrods instead.

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Diana wore a Cojana off-the-rack suit for her engagement shot. Not a classy attire.

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Under her power suit, Diana wore a white blouse with a bow-tie-style neckline. She also wore simple shoes and a clutch.

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David Sassoon personally invited Diana back to Bellville when the shop worker didn't recognise her. He became her key fashion partner.

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Diana chose a sailor suit from the studio's ready-to-wear collection for her first official photo with Queen Elizabeth II.

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Diana's fashion forever changed the world and the Royal Family, and she is still remembered as a style icon.

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