Kate Middleton and Prince William Just Wrote Their Nephew, Archie, the Sweetest Birthday Message

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Kate Middleton, Duchess of Cambridge and Prince William, Duke of Cambridge
Kate Middleton, Duchess of Cambridge and Prince William, Duke of Cambridge

Jeff J Mitchell / Staff via Getty Images

We're wishing a very happy birthday to Archie Harrison—Prince Harry and Meghan Markle's first child—who officially turns three today. To mark the happy occasion, his aunt and uncle, Prince William and Kate Middleton, took to social media to share their well wishes for their nephew on his special day.

In an Instagram Story, the Duke and Duchess of Cambridge wrote, "Wishing Archie a very happy 3rd birthday today," which accompanied a photo of them alongside Archie at his July 2019 christening. Also featured in the image are Archie's parents and his grandparents Prince Charles, Camilla Parker Bowles, and Doria Ragland.

Related: Meet Orla! Kate Middleton and Prince William Just Shared the Name and First Photo of Their Family Dog

Prince William and Kate Middleton weren't the only royals to send little Archie their best wishes. In their own Instagram post, Prince Charles and Camilla also shared a photo from the christening—it shows a heartfelt moment in which the Prince of Wales can be seen admiring Prince Harry while he holds the newly-christened Archie. Of course, the firm's official Instagram account also gave the birthday boy a shoutout: "Wishing Archie Mountbatten-Windsor a very happy 3rd birthday!"

There has been a wave of royal birthdays in recent weeks; the Duke and Duchess of Cambridge, in fact, recently released new images of their children in honor of two of their birthdays. Their second eldest child, Princess Charlotte, turned seven earlier this month, while Prince Louis hit four at the tail end of April. Both little royals also received their fair share of birthday messages from loved ones. What's more, the Queen of England herself just celebrated her birthday on April 21—she turned 96 this year!