Diana, Princess of Wales, attended her first Trooping the Colour ceremony in 1981, when she was just 19 and the occasion unfortunately coincided with a terrifying security incident.
Princess Diana made her first appearance at the Trooping the Colour ceremony to mark the late Queen's birthday back in 1981 when she was just 19-years-old, but unfortunately the day took a disastrous turn.
The grand event is held annually on the second weekend of June for the monarch's official birthday regardless of their actual date of birth, as King Charles prepares for his celebrations this weekend despite being born in November.
The Trooping the Colour ceremony is typically a time when royals gather on Buckingham Palace's balcony to marvel at an indomitable RAF fly-past following a parade that moves from the Palace down to The Mall before finally reaching Horse Guard's Parade.
Prince Andrew accompanied Diana, then only 19, in a carriage while her soon-to-be spouse, Prince Charles, participated on horseback.
The late Princess of Wales wore a bespoke blue floral suit designed by Bill Pashley for the event - which occurred only one month prior to Lady Diana Spencer, as she was formerly known, exchanging vows with Prince Charles in an opulent ceremony at St Paul's Cathedral.