The Instagram account of the Duke and Duchess of Sussex has posted a shot of baby Archie’s tiny feet in honour of Mother’s Day (in the US, you can stop panicking).

A photograph of Meghan’s hand cradling her son was posted on the social media site on Sunday afternoon along with a poem by Nayyirah Waheed.

It reads: 

my
mother
was
my first country;
the first place i ever lived.

The more astute observers commenting on the post also noticed a background of Princess Diana’s favourite flower, purple forget-me-nots.

While Mother’s Day here in the UK is traditionally on March, the US where Meghan is from, as well as a number of other countries, celebrates it in May.

It’s not the first nod stateside form the royal couple – the couple broke with royal convention by not using a title for their baby boy, and have given their firstborn a name familiar to fans of the American Archie comic – featuring a main character who has red hair just like the duke.

Harry and Meghan’s first born, who is seventh in line to the throne, made his world debut with his besotted mother and father at the castle on Wednesday.

The duchess described her son as having the “sweetest temperament”, while a delighted duke called him “our own little bundle of joy”.

The full text of the Instagram post says: “Paying tribute to all mothers today – past, present, mothers-to-be, and those lost but forever remembered. 

“We honor and celebrate each and every one of you. Today is Mother’s Day in the United States, Canada, Australia, New Zealand, South Africa, Kenya, Japan, and several countries across Europe. 

“This is the first Mother’s Day for The Duchess of Sussex.”