But, it was actually Meghan's choice of nail polish that caught the eye of royal fans.
The duchess chose a bold red across her toenails - which were on full display through her brown laced sandals.
One of Queen Elizabeth's pet peeves is brightly coloured nail polish.
Royal women must abide by this rule, with only fresh and natural looking manicures being accepted by Her Majesty.
Although Meghan has been mostly accepting of this rule, keeping her fingernails to blush pinks and neutrals, she has seemingly decided to go a bit more daring with her toes.
Earlier this week, Meghan broke yet another of the Queen's cardinal rules.
The Duchess of Sussex opted for a pair of black espadrille wedges, and it's a known fact Her Majesty detests the style of heel.
"The Queen isn’t a fan of wedged shoes," a source once told Vanity Fair.
"She really doesn’t like them and it’s well known among the women in the family."