Princess Diana was a shy 20-year-old when she walked down the aisle of St Paul’s Cathedral on July 29,1981.
But just a few months later, her husband Prince Charles realised he had been upstaged by the young princess whic is said to have boosted his jealousy.
The heir to the British Crown realised his young and beautiful wife was being preferred to him during their visit to Wales, in October 1981, according to Lady Elizabeth Anson, party planner and a cousin to the Queen.
She told People: “Diana sort of metamorphosed into a very, very elegant blonde beauty.
“They did a visit to Wales which was the beginning of, for Prince Charles, realising, ‘They’ve come out to see my wife, they haven’t come out to see me’.”
Despite Princess Diana’s life changed dramatically after she joined the Royal Family, she was able to quickly adapt to the new role.
Just within a few months, the Princess conquered the hearts of royal fans and became one of the most photographed and discussed people in the world.
The difficult marriage between Prince Charles and Diana, which ended in a divorce finalised in 1996, may have been doomed since the beginning, not just for jealousy-related reasons.
According to Princess Diana herself, her father-in-law Prince Philip even suggested the possibility Charles would cheat on her with Camilla Parker-Bowles, the now Duchess of Cornwall.
In a US documentary aired 14 years ago, she said: “My father-in-law said to my husband ‘if your marriage doesn’t work out, you can always go back to her after five years’.
“Which is exactly – I mean, for real I knew that it had happened after five (years) – I knew something was happening before that but the fifth year I had confirmation.”
Other sources claimed Prince Charles has been plagued by jealousy and fears of been upstaged also by other members of his family.
In his unauthorised biography Charles called ‘Rebel Prince: The Power, Passion and Defiance of Prince Charles’, author Tom Bower argued Charles has felt “usurped” by the parents of Kate, Duchess of Cambridge.
The investigative journalist wrote the decision of Prince William to spend Christmas 2016 at the Middletons rather than with the Royal Family to “preserve their privacy” created quite a stir.
Mr Bower also said the Prince of Wales felt then “isolated” from his grandchildren Prince George and Princess Charlotte, as they would spend their holidays with the other grandparents.
This information would have been given to Mr Bower by Robert Higdon, the chief executive of Charles’ charity foundation in America.
According to the book, Mr Higdon said: “Charles saw Kate and William as the new stars and feared he’d be in trouble.”