Kate Middleton pregnant: Prince William, wife expecting baby

LONDON (WLS) - The Duke and Duchess of Cambridge have announced that Kate Middleton is expecting a baby.

"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," a Buckingham Palace news release said.

Middleton was admitted Monday afternoon to King Edward VII Hospital in Central London with Hyperemesis Gravidarum, or acute morning sickness.

"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 release said.

The couple was married April 29, 2011. Both Will and Kate are 30.