She was more casually seen at a polo match in June.
She later added: "I hope he stays like this".
Kate Middleton is the queen of recycling fashion, and we love her for it.
She was spotted on a balcony with other Royals watching the flypast. The shade is symbolic of the country so Markle's choice in the color of her dress wasn't a coincidence.
The Duchess was given the precious accessory when she became Patron of the RAF Air Cadets in 2015, which was her first official Royal military appointment, taking over from the Duke of Edinburgh.
Kuo noted that Queen Elizabeth II has also engaged in diplomatic dressing during her worldwide trips.
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Princess Diana also sent out diplomatic messages when she traveled to Japan several years ago.
White gloves are a mainstay of the Queen's wardrobe, no matter what the weather, and while Meghan has yet to actually don any gloves (apart from leather ones in winter), at yesterday's christening she was carrying a pair that matched her olive Ralph Lauren dress.
Markle has been following on the other female royals' footsteps, and she is expected to do so for years.
Meanwhile, Markle's choices in clothing have also inspired some women to dress just like her.
Meghan's husband Harry, The Duke of Sussex, was on her left. When Walter Cullen, 3, met Meghan and Prince Harry during their visit to Dublin this week, the little boy reached out to touch the Duchess of Sussex's brunette locks before clasping his palm to his mouth in disbelief. The Queen is scheduled to meet President Donald Trump later this week.
More closely, Kate is a former RAF wife herself, with William having earned his wings - along with Prince Charles, Prince Philip and King George VI - in 2008.