Diana was like the fairy tale 'Cinderella', cooking and cleaning for her elder sister, the gorgeous red head debutante, Sarah Spencer, who was dating the Prince of Wales. Diana was told to remain out of sight whenever the Prince visited, and that she'd not be going to the ball. 'Cinder-diana' even had a cat and 'mice' (hamsters) for pets, cat was named 'Marmalade' (and not 'Lucifer').
And an 'evil' Stepmother (Raine Spencer), who pushed Diana out of her family home. Diana moved to a flat in London and worked at a kindergarten. Dressed plainly, she lived an ordinary life, till one day her Prince Charming (Charles) came along and asked her out. To Balmoral, to meet the Family.
The Queen was like the fairy Godmother granting Diana her wish to go to the Palace and marry the Prince. Her fairy tale Royal Wedding to Prince Charles at St. Paul's cathedral in 1981 was watched by 750 million people on TV and stunned the world. Overnight, she became the greatest sensation.
(Excellent performances from lookalikes Diana (Emma Corrin), Prince Charles (Josh O'Connor) and HM the Queen (Olivia Coleman)).