Even the royals can't escape the "terrible twos."

Prince George is proving to be handful for his parents, Prince William and Kate Middleton, and like most two-year-old boys, the heir to the throne is keeping them on their toes!

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"He's got a scooter. He's going super fast on it," Kate told a group of children in London following the Commonwealth Day service at Westminster Abbey. "It's hard to keep up with him."

While speaking to the kids, the Duchess of Cambridge also shared that George's little sister, Charlotte, is "getting bigger every day."

And it seems an extra girl in the house is just what George needs. "Charlotte is keeping him in check," Kate added.

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The royal family was recently spotted on a ski vacation in the French Alps, the first for the family of four and the first time the children played with snow.

Check out the gallery below for more adorable photos of the royals on vacation!