The celebration kicked off with a military parade featuring more than 1,400 soldiers, 200 horses and 400 musicians, with Meghan and Harry riding together in a horse-drawn carriage that took them to Buckingham Palace (Kate and Camilla rode in their own carriage).
For the British Royal Family, Trooping the Colour 2018 served as a joyous event to celebrate the birthday of Queen Elizabeth II - and gave fans another look into the extraordinary lives of the royal family.
She was without her husband, the Duke of Edinburgh, who turns 97 on Sunday.
He is now recovering from a hip replacement, but was well enough to be able to his attend the wedding of Prince Harry and Meghan Markle three weeks ago.
Meanwhile, Duchess Meghan, who made her very first appearance at the iconic yearly ceremony - looked incredible in a pale-pink Carolina Herrera ensemble, which had a slightly retro feel with a button-down front and open neckline.
One guardsman stood out: Charanpreet Singh Lall, a 22-year-old Sikh from Leicester, who wore a black turban.
Queen Elizabeth and Prince Philip are also royal colonels, but the parade is for the queen, and Prince Philip is getting up there in years and just had a hip replacement.
Queen Elizabeth was the first to arrive at Horse Guards Parade for her birthday parade. It originated from traditional preparations for battle.
The Queen ditched the sunglasses she had been wearing since a recent cataract operation, the Daily Mail reported.
Or rather, why isn't Prince Harry on horseback?
It's part of a strategic plan to formally introduce Meghan as an integral member of the royal family.
With Meghan still relaxing after the trip, Harry went to work on Friday, slipping into a tux to welcome charity OnSide Youth Zones to the palace for a gala dinner.
"Both of us have passions for wanting to make change, change for good, and, you know, with lots of young people running around the commonwealth, that's where we'll spend most of our time hopefully", Harry said shortly after the couple's engagement was announced in November.
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