Because Prince Charles was - and still is - the Prince of Wales when she married him.
Her name was never Princess Diana. He correct title was Diana, Princess of Wales.
Diana was called Princess of Wales because she was married to the heir to the throne of England
She was never called Princess Diana, her title was the Princess of Wales, which she acquired when she married Prince Charles who is the Prince of Wales.
Diana became HRH Princess of Wales when she married Prince Charles on July 29th, 1981. After the divorce in 1996 she had to give up the HRH (Her Royal Highness) and became Diana, Princess of Wales. She was never officially called Princess Diana.
If you mean Diana, the Princess of Wales. She is dead.
If you mean was Princess Diana short for something? then yes it was short for Diana, Princess of Wales. If you mean is there a shorter name for Princess Diana? then some people called her Princess Di.
When she was born, as the daughter of a viscount, she was called the Hon Diana Frances Spencer, and when her father inherited the earldom she became Lady Diana Frances Spencer: she was born an aristocrat but a non-Royal and therefore a commoner. When she married Prince Charles, she was called Her Royal Highness Diana, Princess of Wales. When she divorced Prince Charles, she became Diana, Princess of Wales.
Diana, Princess of Wales
No she was not the first Princess of Wales. The title Prince of Wales was established in 1307 by Edward I. There have been 10 Princesses of Wales since it was established and Diana was the 9th.
1981.
As a member of royalty (She was lady Diana Spencer) she married the Prince of Wales, becoming Diana, Princess of Wales.
She's a popular princess from Wales!
Diana, Princess of Wales, (not Princess Diana) divorced Prince Charles.
England
No, she was buried.