Ballet was one of her first loves

As a child in Norfolk, England, little Diana Spencer studied ballet and dreamed of taking the stage with the Royal Ballet. Unfortunately, her height held her back, as she eventually grew to nearly 5’11” (180cm). But her passion for dance remained even after she married Prince Charles in 1981. She was known for her generosity in supporting the English National Ballet, both as a private dancer and through fundraising efforts. In 1985, she surprised an audience, including the royal family, at the Royal Opera House with a three-minute contemporary dance performance with her friend and former Royal Ballet Principal Wayne Sleep. After her death, renowned ballet dancer and choreographer Peter Schaufuss developed a full-length ballet called Diana—The Princess.
Lady Di wasn’t Charles’s first choice

In the late 1970s, Charles was heavy on the dating scene, spending time with ladies such as Lady Jane Wellesley, the Duke of Wellington’s daughter, and brewery heiress Sabrina Guinness. He even proposed to the granddaughter of his mentor Lord Louis Mountbatten (she said no). He was also spending time with Sarah Spencer, Diana’s sister. Through it all, he had one very ineligible bachelorette on his mind: Camilla Shand, who had married Andrew Parker Bowles in 1973. Low on options and under pressure to tie the knot, Charles turned to the Queen – and to Camilla – for advice. Both agreed that Diana would be a good fit. Charles proposed in February 1981; Diana chose an engagement ring of 14 solitaire diamonds surrounding a 12-carat oval blue Ceylon sapphire set in 18-carat white gold.
This is the real reason Charles didn’t marry Camilla in the first place.
Nearly everyone in the world watched Diana’s wedding

When Prince William and Kate Middleton got married in 2011, 300 million viewers tuned in. Sounds like a lot? Hardly. In 1981, when Diana married the Prince of Wales, a whopping 750 million people around the world watched.