With a ginormous hat.

The Duchess of Cambridge wears many hats, both figuratively and literally. But her latest, an all-gray number for the Commonwealth Day celebration service in London Monday, knocked her typically tiny fascinators out of the park.

Samir Hussein via Getty Images

Clad in a gray coat by Canadian favorite Erdem with a matching clutch, shoes and hat by British milliner John Boyd, the royal formerly known as Kate Middleton looked a lot like beloved American Girl doll Samantha Parkington:

American Girl

Their striking similarities have caught our attention before, but this outfit might just serve as final proof that they're one and the same person.

Mark Cuthbert via Getty Images

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