Harry Potter Cameos and Easter Eggs in Crimes of Grindelwald
The Biggest Harry Potter Easter Eggs Hidden in Fantastic Beasts: The Crimes of Grindelwald
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Remember that pointy blue hat Fleur Delacour wears in Harry Potter and the Goblet of Fire, which is tilted at a distinct angle? Grindelwald's closest confidante, a witch named Rosier, wears an almost identical hat tilted at the same angle. Only hers is black, naturally.