Buckingham Palace: Kate Middleton Is Pregnant!

It's official! Britain will soon have a new heir to the throne.

Prince William's wife, Kate Middleton, is pregnant with the couple's first child, Buckingham Palace announced Monday.

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"Their Royal Highnesses The Duke and Duchess of Cambridge are very pleased to announce that The Duchess of Cambridge is expecting a baby," the Palace said in a statement. "The Queen, The Duke of Edinburgh, The Prince of Wales, The Duchess of Cornwall and Prince Harry and members of both families are delighted with the news."

Middleton — or Duchess Catherine as she's officially known — was admitted to a Central London hospital Monday with acute morning sickness, the Palace reported.

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"As the pregnancy is in its very early stages, Her Royal Highness is expected to stay in hospital for several days and will require a period of rest thereafter," the statement said.

The report comes after months of speculation about when the couple would start a family. Are you excited about the news?