The Royals sure love their big hats!

Prince William, Princess Kate, Prince Harry and Queen Elizabeth II all showed up to Derby Day in Epsom, England today -- where the newlyweds made their first public appearance since getting married.

While the boys kept it simple with top hats and waistcoats, Kate looked cute in a white jacket, matching short skirt and brown hat.

The couple will be landing in America soon -- with a trip scheduled to the US at the end of the month.

Check out the Derby pics!

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