Kate Middleton's Third Baby Has a Confirmed Due Date

Prince William and Kate Middleton are expecting their third child in April, a spokesperson has confirmed.

The palace released a statement to announce the news which read: "Their Royal Highnesses The Duke and Duchess of Cambridge are very pleased to announce that The Duchess of Cambridge is expecting their child".

Pregnant Kate Middleton may be suffering from acute morning sickness, but that didn't stop her grinning from ear to ear as she stepped on Platform 1 at Paddington station in London today (16 October).

The baby, due in April, will be the couple's third - joining Prince George, four, and Princess Charlotte, two. Kate also missed George's first day of school a few days later.

The royal trio were all smiles as they made an appearance at a Charities Forum event at London's Paddington Station with the Duchess even showing off her dance moves and taking a twirl with Paddington Bear.

He pointed out: "Now, bearing in mind they announced that she was pregnant back in September and it was thought she was two or three months pregnant at the time, I'm not sure how much news this really is".

"Her condition is improved, but the duchess does continue to be affected by hyperemesis gravidarum", a royal aide told ABC News Monday.

Just last week, the woman was at a Buckingham Palace reception, where she celebrated the people who work in the mental health sector. Kensington Palace announced today that instead William will visit Finland alone in November, a trip he will make at the request of the U.K.'s Foreign and Commonwealth Office.

William, 35, and Catherine - previously known as Kate Middleton - will kick off an exciting year with an official royal tour of Norway and Sweden in early 2018.