Trooping the Color parade in honor of Queen Elizabeth's birthday

(Photo: NBC News)

LONDON (NBC News) – The Royal Family and thousands of spectators joined the Queen Saturday for her official birthday, marked with the annual Trooping the Color parade.

Britain's Prince Harry and his wife Meghan were among members of the Royal Family to attend the annual military parade in honor of Queen Elizabeth.

It is Meghan's first official royal engagement since the birth of her and Harry's son Archie.

Known as the Trooping of the Color, the parade has marked the official birthday of the reigning British monarch for more than 260 years, and this year features more than 1,400 soldiers, nearly 300 horses and 400 musicians.

The display comes with a fly-past by Britain's Royal Air Force.

Meghan Markle, an American actress who married Harry at Windsor Castle in May 2018 and gained the title of Duchess of Sussex, gave birth to Archie on May 6.

She was not among Royals who met President Donald Trump during his state visit to Britain earlier this week.

The Duchess of Cornwall, the Duke and Duchess of Cambridge and the Duke and Duchess of Sussex were seen waving at the crowd on their carriage as they went down the mall in central London.

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