Princess Diana and Prince Charles could have been a fairy tale love story -- only that they were said to be mismatched. They ended up parting ways and divorcing and upon learning that the Prince of Wales would be announcing his relationship with Camilla; the Princess of Wales one-upped her ex-husband by cartwheeling on the beach.

A month before Princess Diana died, she went to St Tropez with Mohamed al-Fayed and friends. Prince Charles, on the other hand, was reportedly planning his coming-out party for his romance with Camilla. Although they were already separated, according to Express, it would likely upset the People's Princess, who learned of her ex's infidelity with the now-Duchess of Cornwall.

So to get back at Prince Charles and Camilla, Piers Morgan revealed Princess Diana used the media. In the 2013 Amazon Prime documentary Royalty Close Up: The Photography of Kent Gavin, the Good Morning Britain host recalled how Princes William and Harry's mother created a plan to overshadow the new couple's announcement.

"Diana would definitely play games with the media," Piers Morgan said. He recalled receiving a message from Princess Diana, inviting them to a beach at 9 a.m. When he asked why she responded with, "wait and see."

When the media got there, Princess Diana started cartwheeling across the beach. "It was 1-0 to Diana," Piers Morgan added. Of course, the event was caught in the picture, and her pose in a leopard-print one-piece swimsuit on the beach circled the globe.

There were claims that Princess Diana and Prince Charles were infamously mismatched and their relationship had been wrong from the very start. The heir to the throne knew it was a wrong decision to marry Diana then, but he couldn't talk to either Prince Philip or Queen Elizabeth about it.

After the 1981 grand royal wedding, they already had a rocky relationship. In 1992, they got separated and eventually ended up in a divorce in 1996. In Penny Junor's 2005 book, The Firm, he revealed Prince Charles received advice before he proposed but knew that their marriage would no longer be open for discussion when he asked Princess Diana for marriage.

His close friend Norton Ramsay tried to talk to him about it, but was often told to "mind his own business." He wouldn't listen to his friends but would only take advice from Louis Mountbatten, who he considered as his father.

However, as Mountbatten was already dead, Prince Charles felt lost without his advice and guidance. Sadly, as he refused help from his friends about his marriage to Princess Diana, he, too, couldn't talk about it to his parents.