Kate, dressed in a light blue Zara dress and Russell & Bromley wedges, kept a watchful eye on the children, consoling a tearful George at one point.
Charlotte attempted headstands and pranced around the grounds, much to the amusement of her mother, who could be seen having a hearty laugh while her daughter was upside down. Charlotte was also pictured peering into her mom's purse.
Autumn Phillips and her children, Savannah and Isla, joined the royals. The comfortable dress made it possible for Kate to chase the kids and keep them from running onto the polo field.
Over the course of the day, the little royals could be seen playing with a huge slinky, a miniature golf set, arts and crafts and the controversial toy gun.
Donald Trump Bestows First Post-Summit Sit Down On Sean Hannity
North Korea has called for an end to the exercises as part of the United States' ending its "hostile policy" toward the country. Surprising no one, Fox News confirmed President Donald Trump is giving his first post-summit sit down to pal Sean Hannity .