Meghan Markle's Mother's Day pic was a secret tribute to Diana

Yesterday, Meghan Markle celebrated her first Mother's Day (it's a different date in the US and other countries) by posting a picture of Archie on Instagram, and naturally it's already gone viral.

Shared on Meghan and Harry's official account, SussexRoyal, it showed Meghan's hand holding baby Archie's adorable tiny feet.

It came with the caption, '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. Quote from “lands” by @nayyirah.waheed: my mother was my first country; the first place I ever lived.'

With this post, the Duchess celebrated all mothers, including Princess Diana it seems. In the background of the picture, you can see a blanket of Forget-Me-Nots, which were the late royal's favourite flowers, and of course the post mentioned those 'lost but forever remembered'.

It wouldn't be the first time Meghan and Harry want to include his mother in special moments in their lives. The Duchess' engagement ring is made with a diamond that used to belong to Diana, whilst she wore her ring on her wedding day too.