But it was her actions this week that really made an impact, with Queen Liz inviting Meghan to accompany her on her personal train - the royal train - to Cheshire, an honour usually reserved for senior titles.
The 36-year-old former American actress and star of the TV drama "Suits" wore a slim-fitting Givenchy cream dress, caped at the shoulders and belted at the waist.
Meghan paired her look with a small black clutch and black heels.
There were a few memorable exchanges during Trooping the Colour, including when Queen Elizabeth's great-granddaughter Savannah Phillips aggressively shushed her cousin, Prince George, as he sang during the national anthem.
The Royal Family must walk in line with their rank, which means no one should walk in front of the Queen.
But the duchess was without gloves.
A fan captured an adorable moment in which Markle nervously asked her husband to confirm that it was time to curtsy.
They will then officially open Storyhouse, Hunter Street, Chester.
It's protocol for The Queen to enter the vehicle first, but the monarch seemed happy to allow Meghan to enter before her.
It's like Meghan's been doing this her whole life!
"Thanks to a series of tiny loopholes in Canadian law, it's technically possible that Canada could immediately crown Prince Harry and Meghan Markle as king and queen of Canada", according to the country's National Post newspaper. Her constant delighted smiles let Meghan and the world know that she is happy to have the new bride at her side.
After the day's royal engagements wrapped up, the pair headed to Chester Town Hall for a lunch, before hopping back on the train back to London. In addition to attending the event for the opening of the Mersey Gateway Bridge, they also watched a performance by local school children, toured a children's library and met a Syrian settlement group engaged in craft work, the Daily Mail reported.