Prince William Prince George Princess Charlotte Father's Day 2021
Photo: Backgrid

Prince George and Princess Charlotte joined their father, the Duke of Cambridge, for some Father’s Day fun on Sunday (June 20).

Per People, the two eldest Cambridge children and Prince William attended a half-marathon that took place at the queen’s Sandringham estate. For the outing, all three royals dressed casually: George opted for a plaid button-down shirt, navy shorts, and matching Nike sneakers and socks, while his younger sister wore a pastel-pink sweater, athletic shorts with coordinating magenta sneakers, and her hair styled in an adorable half ponytail. Prince William wore his signature uniform of a light-blue oxford shirt, navy slacks, and brown suede shoes. The duke, George, and Charlotte reportedly helped count down the start of the race and cheered on all the participants while there.

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The family fun day came ahead of Prince William’s 39th birthday today, which members of the royal family have taken to social media to celebrate. On William and his wife Duchess Catherine‘s official social media pages, the paired shared a new photo of the prince to mark his special day.

“Thank you for all the birthday wishes and kind messages 🎂,” the caption from the couple read alongside the post.

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Prince William’s father, Prince Charles, also marked his eldest son’s birthday, sharing a throwback photo with William as a baby and a more recent image featuring his adult son and his wife, Duchess Camilla.

“Wishing The Duke of Cambridge a very Happy Birthday today! 🎂,” the post read.

This article originally appeared on Harper’s BAZAAR US.

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