Trooping the Colour is one of the most exciting events in the royal calendar and is always held on the second Saturday of June to officially celebrate the sovereign's birthday.
The princess - who has earned recognition in the past for her waves and curtsies - frequently wears Mary-Janes and wore custom Aquazzura shoes in a bright white at uncle Prince Harry's wedding to Meghan Markle in May.
As we all know, The Queen loves to be colourful when it comes to her wardrobe so each family member wore bright and attractive colours in honour of the event.
Ever since Meghan Markle and Prince Harryannounced they were dating, the American actress has been inspiring wardrobes across the world.
The Queen, dressed in blue, rode by herself in an open carriage.
Prince Harry reportedly responded saying "yes.", before smiling and adding, "When you get into it, I'll tell you more later".
For the first time, Markle was snapped alongside what appeared to be just about the entire royal family.
In celebration of the queen's birthday, which is actually in April, over 1,400 parading soldiers, 200 horses and 400 musicians come together each June in a display of military precision and horsemanship. "We loved that she was still very much Meghan while also still embracing her role as the Duchess of Sussex".
They will also attend a lunch at Chester Town Hall.
The Queen was flanked by her sons, the Prince of Wales and Duke of York, at the front of the balcony, while the newlyweds stood behind her, surrounded by other members of the royal family. Flaunting an attractive hat from Philip Treacy, the 36-year-old swapped her signature messy bun with a shiny blowout.
Meghan's new sister-in-law, Kate Middleton, has always worn a sleeve that comes past the elbow since making her Trooping debut in 2011.