Prince Albert, Princess Charlene of Monaco

Associated Press
Residents of Monaco write down their congratulations and wishes to Prince Albert and Princess Charlene of Monaco on the birth of their twins at the Royal Palace in Monaco,  Friday, Dec. 12, 2014. For the first time since Monaco was founded in the 13th century, its royal family gave birth to twins on Wednesday, and dozens of cannons were fired to celebrate. Monaco's Princess Charlene had a girl first and a boy second, but the boy will be the principality's future ruler, reflecting the male priority of Monaco's laws of succession.  (AP Photo/Claude Paris)

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Prince Albert II of Monaco married Charlene Wittstock in July. The prince is one of three children of Prince Rainier and his late wife, American actress Grace Kelly.

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