What is Trooping the Colour?
The Trooping of the Colour has marked the official birthday of the British Sovereign for more than 260 years.
The official royal family website says: “Over 1400 parading soldiers, 200 horses and 400 musicians come together each June in a great display of military precision, horsemanship and fanfare to mark The Queen’s official birthday.
“The display closes with an RAF fly-past, watched by Members of the Royal Family from Buckingham Palace balcony.”
A 41-gun salute is also fired in Green Park to mark the occasion.
Last year, Meghan and Harry beamed at the event as newlyweds.
The former Suits actress, who wore a Carolina Herrera dress and a Philip Treacy hat for the occasion, dazzled in her second royal engagement since her showstopping wedding on May 19, 2018.