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Prince William and Kate reveal new Royal Baby name

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The Duke and Duchess of Cambridge have named their new arrival Louis Arthur Charles.

The baby, who was born on Apr. 23., will formally be known as His Royal Highness Prince Louis of Cambridge.

Kensington Palace made the announcement on Twitter Friday morning.

He’s fifth in line to the throne – after his grandfather Prince Charles, his father Prince William and his two older siblings Prince George and Princess Charlotte.