A. The Netherlands
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Princess Irene, Princess Margriet, Princess Christina, and Princess Beatrix: Princesses in the snow.
Source: Source
B. Sweden
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Little royal soldier - Three-year-old Prince Carl Gustaf, now King Carl XVI Gustaf of Sweden, posing for a portrait in 1949.
Source: corbis
C. Monaco
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Family vacation - Nine-year-old Prince Albert, now Prince Albert II of Monaco, with his mother Princess Grace of Monaco in Jamaica in 1967.
Source: Corbis
D. Belgium
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Two kings and a consort: Princess Josephine-Charlotte and Prince Baudouin around their brother Albert's crib in 1934. Prince Baudouin became King of the Belgians in 1951, and his brother Prince Albert succeeded him as King Albert II in August 1993. Princess Josephine-Charlotte married Prince Jean, the Hereditary Grand Duke of Luxembourg, and became the Grand Duchess of Luxembourg in 1964.
Source: Corbis
E. Norway
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Prince Harald, then heir to the Norwegian throne, now King Harold V of Norway, is pictured with his sisters Princess Ragnhild and Princess Astrid in 1937.
Source: Scanpix