Writing about the royal romance that has captured our attention for years, biographer Ingrid Seward detailed how Sarah and Andrew met at Ascot in the summer of 1985.
“[Sarah’s] acquaintanceship with the Princess of Wales had developed into a close friendship and while the Windsor gathering was very much the Sovereign’s private gathering, she enjoys the company of younger people and naturally enough sought the guidance of her daughter-in-law when she came to draw up the guest lists.
“Sarah was the obvious choice."
Ms Seward continued: "The right age, the right background, and already on familiar terms with the Royal Family."
Ms Seward writes that Diana purposefully placed her friend red-headed friend next to Andrew at the Royal Ascot lunch.
"The Princess, an incorrigible romantic, may have been trying her hand at a little matchmaking."
While Diana and Sarah were initially good friends, the pair had an infamously rocky relationship after Diana allowed Her Majesty to believe that Fergie leaked the news of her separation from ex-husband Andrew.
Due to this incident, Fergie and Diana were not on speaking terms the year the Princess of Wales passed away.
Fergie and Andrew would go on to have two children together, Princess Eugenie and Princess Beatrice, and the former couple continues to remain best friends.