Queen Camilla's brief nail-biting moment at Royal Ascot on Tuesday was the sort of tiny lapse that the modern monarchy cannot hide for long, and it has already revived familiar comparisons with Princess Diana and Meghan Markle.
The Queen was caught on camera at Ascot Racecourse, Berkshire, during the opening day of Royal Ascot on 16 June, while watching the races with King Charles, who was beside her in the Royal Enclosure.