The Princess Royal arrived at Epsom Downs Racecourse to loud cheers as the racegoers showed their appreciation to The Queen and the Royal Family.
Her Majesty was unable to attend The Derby in person, sending Princess Anne instead to lead the festivities.
Dressed in a light green coat with a matching hat, HRH was greeted at the entrance to the newly renamed Queen Elizabeth II stand by the Chair of Epsom Downs.
Princess Anne was joined by her husband, Sir Tim Laurence, and her two children – Peter Phillips & Zara Tindall, with Mike also there.
Just like her mother, Princess Anne has a love of horse racing and is a regular face at racecourses across the UK.
The Derby is the most prestigious flat race for three-year-olds in the world. The winner receives in excess of £750,000, a place in history, and cements his chances of becoming a sire.