Kate passes a packed lunch to CharlotteCredit: � Max Mumby
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Charlotte runs off as Kate chats to Prince GeorgeCredit: Getty - Contributor
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Prince George takes a run up for the ballCredit: Rex Features
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The eldest two Cambridge kids played together this afternoonCredit: Rex Features
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Charlotte wore a sweet pink dress while her big brother George wore a light green shirtCredit: Rex Features
Prince George, five, also took a turn kicking the ball in the grass during the royal family day out.
Kate Middleton had her hands full walking around with Prince Louis while keeping a watchful eye on George and Charlotte.
Her sister-in-law Meghan Markle took baby Archie on his first outing to cheer on dad Prince Harry as he went head to head with brother William in a charity polo match.
The new mum kissed her eight-week-old son as she watched the King Power Royal Charity Polo Day this afternoon.
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