Clearly, both she and Will are naturals when it comes to interacting with children.
Kate and William started their second day in Ireland in Ballymena and, as expected, they were greeted by many fans that made sure to warmly welcome the Royals to their town.
Afterwards, William and Kate headed inside the Braid Arts Centre to view the work of the Cinemagic charity, which uses "film, television and digital technologies to engage with over 500,000 young people", according to the Royal Family's website.
At one point, the duchess hugged and comforted nine-year-old Jasmine Andrews after she became emotional about the occasion.
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The 37-year-old-royal, who's on a surprise two-day trip to Northern Ireland with Prince William, headed to an event at Belfast's Empire Music Hall wearing a green Missoni dress ($2,480) featuring metallic lamé, a pleated skirt and long sleeves.
There has been plenty of speculation as to whether the Duke and Duchess will have a fourth child, to follow in the footsteps of the Queen and Prince Philip. For the outing, which showcased Middleton's athletic side, she wore a navy quilted Barbour Longshore jacket over a white v-neck sweater with red and white stripes, black skinny jeans and navy New Balance runners.
The royal couple were officially welcomed to the venue by the Vice Lord Lieutenant for County Antrim Richard Reade.
William said it was "fitting" to recognise Dame Mary, who he said had "helped inspire so many of you in the first place".
Prince William and Kate Middleton visit the Irish Football Association in Windsor Park in Belfast on Wednesday. Do you think they'll have another baby?