They shared a carriage from Buckingham Palace to Horse Guards Parade where they witnessed almost 1,500 troops perform a military display as part of the official Queen's birthday celebrations. Plus, Harper's Bazaar reports that Markle was "nervous" for the celebration and even Prince Harry had to tell her when to curtsy, so we doubt she would intentionally cause waves with the cut of her dress. The momentous occasion is Meghan's biggest royal responsibility to date, as she will accompany the monarch without her husband by her side.
On Saturday, Harry and Meghan attended the annual Trooping the Colour parade in London.
Despite their different directions in style at the weekend, both women certainly have one thing in common: their wardrobe choices often sell out in an instant after a public appearance.
"Why?" you ask. Well, because it shows too much of her shoulders. The young schoolchildren will have seen their grandmother ride past in her horse-drawn carriage, sitting alongside Prince William's wife Kate.
The tour is not just a late honeymoon for Harry and Meghan.
They were first pictured together at the opening ceremony for the event in Toronto a year ago, and they cheered on competitors hoping to be chosen for the British team for Sydney a month before they were married.
Here's everything you need to know about the important royal gesture, from when Meghan will have to do it and to whom. The "Quantico" actress wore a pastel shade of purple with a matching hat by Philip Treacy, while Spencer opted for a navy blue, collared dress with polka dots and a matching hat.
The pair were spotted looking lovingly at each other while the Queen made her way into the palace.
Hear more on how Meghan's been adapting to royal life in the video below.