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404675 22: Dutch Princess Margriet and her husband Pieter van Vollenhoven attend 'Queen's Day,' the nation's biggest holiday, April 30, 2002 in Meppel, The Netherlands. Traditionally, Queen Beatrix celebrates her birthday on this day, which is actually the birthday of her mother Princess Juliana. (Photo by Michel Porro/Getty Images)

404675 22: Dutch Princess Margriet and her husband Pieter van Vollenhoven attend 'Queen's Day,' the nation's biggest holiday, April 30, 2002 in Meppel, The Netherlands. Traditionally, Queen Beatrix celebrates her birthday on this day, which is actually the birthday of her mother Princess Juliana. (Photo by Michel Porro/Getty Images)