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by Lady Diana Frances, via Flickr

The ultimate Sloane Ranger, Lady Diana Spencer was born into an aristocratic family and became Lady Diana in her teens when her father was made an Earl.

Lady Diana Spencer. She's the most photographed person. Here's another one new to the board

30 November Lady Diana walks outside her flat in Earls Court in London, prior to her engagement to Prince Charles.

A young 19 year old Lady Diana Spencer taken before her marriage to Prince Charles.

Previously unseen photo of teenage Princess Diana scrawled with 'not to be published' goes under the hammer

Stifled giggle fit Youthful: A young Lady Diana Spencer taken before her marriage to Prince Charles.

June 24, 1981: Lady Diana Spencer attends West End Royal Premiere of the latest James Bond film, "For Your Eyes Only".:

Lady Diana Spencer attends the Premiere of the new James Bond movie 'For Your Eyes Only' - June Diana looked stunning wearing a vibrant red and gold chiffon evening gown studded with sequins, designed by Bellville Sassoon.

❈Téa Tosh❈ “Diana” by Julian Finney on Getty Images

"Diana” by Julian Finney on Getty Images Watching the special on TLC right now. Hard to believe it's been 20 years.

Lady Diana Spencer ~ for her official engagement portrait, Collingwood, the…

1981 Lady Diana Spencer ~ for her official engagement portrait, Collingwood, the London jewlers, lent the Princess - to - be a suite of diamonds.

Diana wedding gown , 1981. Such a hopeful expression. #RoyalSerendipity #Diana #Princess Princess Diana

From Pretty Woman and Atonement to The Seven Year Itch, the most unforgettable dresses of all time

Diana wedding gown , Such a hopeful expression. The puffy sleeved wedding dress setting a trend during the time.

Lady Diana Spencer November 1980. A formal shot taken to celebrate her engagement to Charles.

Lady Diana Spencer November We know from the make- up artists book that the purple blouse was the first in the shoot

Then a young bride-to-be, Diana's colourful jumper looks gaudy in 2017

Princess Diana's biggest sartorial mishaps

Then a young bride-to-be, Diana's colourful jumper looks gaudy in

Lady Diana Spencer 1980 - working at the kindergarten prior to her engagement

17 sept Diana when she was still a teacher at the Young England Kindergarten in London’s Pimlico district

LADY DIANA during parents divorce

Lady Diana Spencer is startled after stalling her new red Mini Metro outside her Earls Court flat in London just days before her engagement to Prince Charles was announced.