- Prince George appears on the balcony of Buckingham Palace to watch the fly-past
- The queen's official birthday is marked by the Trooping of the Colour
- Catherine makes her first public appearance since Princess Charlotte was born
The queen's actual birthday is on April 21 -- when the British monarch this year turned 89. But in line with tradition, her birthday is also celebrated on a summer Saturday when the weather is likely to be better for the parade, known as Trooping the Colour.
The queen was joined by her husband, Prince Philip, and other members of the royal family for the ceremony in central London, led this year by the Welsh Guards
After the parade, the queen joined other members of the royal family on the balcony of Buckingham Palace for a flypast by the Royal Air Force.
At that point, Prince George, now a month from his second birthday, stole the show as he made his first balcony appearance in the arms of his father, Prince William.
His mother, Catherine, the Duchess of Cambridge, earlier made her first public appearance since the birth of Princess Charlotte
on May 2, riding in a carriage with Prince Harry and Camilla, Duchess of Cornwall.
The queen's first Trooping the Colour was in 1953, shortly after her coronation.
The queen also makes use of her official birthday to award honors to members of the public for their service to the nation.
This year, recipients in the public eye include U.S. actor and director Kevin Spacey, recognized for his contribution over a decade as artistic director of the Old Vic theater in London; actor and charity fundraiser Lenny Henry; and Northern Irish musician Van Morrison.
Another to be honored is journalist Caroline Criado-Perez, who in 2013 petitioned to have women displayed on British banknotes
, prompting a storm of Twitter abuse.