His wife the Duchess of Cambridge took their eldest children Prince George and Princess Charlotte out to support their royal dad as he participated in the game at Beaufort Polo Club in Gloucestershire on Sunday, June 10.
It was a busy weekend for the Cambridges this weekend as they had Trooping the Colour on Saturday.
As they took to Buckingham Palace balcony today to watch the annual fly-over at 1pm, all eyes were on the royal siblings and they didn't disappoint.
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"Sad to see George playing with a gun with the whole country has a gun/knife crime situation", another said.
Prince George and Princess Charlotte undoubtedly stole the hearts of the nation at Trooping the Colour 2018.
During the polo match, the Phillips girls joined Charlotte and George in their sideline antics.
However, there was one element of the Sunday summer scene which seemed out of place: Prince George, 4, was spotted wielding a rather realistic toy gun.
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No one was having more fun at the parade than Philips, who's the daughter of Autumn Phillips and Peter Phillips (the son of Princess Anne and the Queen's oldest grandson).
Low-heeled wedges and a casual dress meant Catherine had no problem bounding down the hill after Prince George. The young princess later settled in for a cuddle in her mum's lap.
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