The young royals put their sibling rivalry to the test as they faced off on opposite teams. Now, we have absolutely no idea about polo, how it works or anything but in our oh-so humble opinion the pair certainly looked the part.
In other royal news Kate Middleton made her final public appearance ahead of giving birth to her's and Wills baby.
The Duchess of Cambridge joined her husband Prince William and other members of the royal family for the Trooping the Colour parade in London in celebration of the Queen's official birthday.
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