The Princess, who became the first member of the Royal family to compete in the Olympics in 1976, suffered a serious fall during the cross-country event.
The Princess Royal, 75, beamed as she arrived at All Saints Church in Kemble alongside the King and Queen and other members of the Royal family to watch her only son tie the knot.
The Princess Royal was walking in the wet conditions outside St Olaves Church in central London when she noticed a Church member covering her head with a folder.
The 11-year-old daughter of the Prince and Princess of Wales is likely destined for a special title given that the late Queen Elizabeth II bestowed additional honours on all of her children.
Charles and Camilla were accompanied by a full turn-out of working royals, including the Prince and Princess of Wales, the Duke and Duchess of Edinburgh and the Princess Royal.
Elizabeth's only daughter, Princess Anne, is set to play a rather unique role in remembering the life and legacy of her beloved mother, who passed away in September 2022.
The Princess Royal, 75, travelled to Clerkenwell in central London for the reception marking 40 years of the first aid charity's National Cadet of the Year Competition on April 10.