LONDON -- As Queen Elizabeth II becomes Britain's longest reigning monarch, she continues her reign as its most famous and fantastical hat wearer.
What better way, then, to celebrate her 63 years, seven months and two days on the throne than with 63 of her most eye-catching headwear moments?
So, here she is, in all her hat wearing glory. Queen Elizabeth, congrats.
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BONUS: A corgi tea party in honor of the Queen's 63-year-reign