The Dukes of Cambridge and Sussex went head-to-head in a charity polo match at Billingbear Polo Club on Thursday and you bet their families were there to cheer them on from the side-lines.
Making his very first public family outing just days after his private christening, two-month-old Archie made a surprise appearance at the match, cradled in his mother Duchess Meghan's arms.
Opting for a laid-back khaki green V-neck midi dress by Lisa Marie Fernandez, Meghan was spotted giving Archie a loving kiss on the forehead as she headed to the field to watch Harry play.
Meanwhile her sister-in-law Duchess Catherine was rocking pink once again, after wearing a striking pink Stella McCartney ensemble to Archie's christening.
For the family day at the polo she wore a gorgeous summery L.K.Bennett dress which she paired with her favourite Castener espadrilles and a red cross-body bag.
And of course, joining her were the three adorable Cambridge children, Prince George, 5, Princess Charlotte, 4, and Prince Louis, 1, and what a delight it was to see more of Prince Louis, whose public appearances have incredibly rare since his birth last year.
George and Charlotte were seen letting loose on the field and kicking a football around, while Louis kept close to Kate and at one point stole his mum's sunglasses while cheekily sticking out his tongue at his young cousin Archie.
The charity polo outing marks the first public playdate for the royal cousins – and we've got to admit we can't wait until Archie's old enough to join his cousins for a run around.
The Cambridge children are no strangers to the polo, however.
Last year George and Charlotte headed to the Maserati Royal Charity Polo Trophy at the Beaufort Polo Club in Gloucestershire, where they were joined by their cousins Savannah and Isla Phillips.
At one point Prince George was seen trying to sit with his cousins, and little sister Princess Charlotte. But he had little success as Savannah decided to give him a big push south.
The young Prince, who was four at the time, looks aghast as he tumbles down the hill, holding onto his drawing.
WATCH: Savannah Phillips pushes Prince George down a hill. Story continues below...
Meanwhile on the polo field William and Harry were competing against each other for the Khun Vichai Srivaddhanaprabha Memorial Polo Trophy, with William's team winning the match.
The charity match raised awareness and ann impressive £1 million (NZD $2.4 million) for fifteen charities supported by William and Harry, including African Parks, The Invictus Games Foundation, The Royal Marsden, The English Schools Swimming Association and The Passage.
Following the game, the Sussexes had an adorable family moment, with Harry, still in his polo kit, lovingly helping Meghan and Archie to the car.
The Duke and Duchess of Sussex just celebrated their son's christening on Saturday, in a private ceremony in the Queen's Private Chapel at Windsor Castle with no more than 25 guests in attendance.
Following the ceremony the couple shared two beautiful portraits - one an intimate black and white photograph of just the family-of-three, and the second, a more traditional group portrait with close members of the family - both taken by royal photographer Chris Allerton.
While the royal couple have stated they would not be disclosing who would had been chosen as Archie's godparents, a loose-lipped royal source has reportedly let slip that one of them is none other than Prince Harry's best friend Charlie van Straubenzee, who Harry has known from childhood.
If true, the choice makes complete sense as not only did Charlie act as an usher at Harry and Meghan's wedding last year but the couple also attended Charlies wedding to Daisy Jenks in Surrey with Harry acting as best man.
While the Sussexes will be heading to Africa in the British autumn, where we'll no doubt get to see more of baby Archie, here's hoping we get a few more glimpses of him before then!
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