Prince William and his wife Catherine, Duchess of Cambridge are expecting their third child.
Kensington Palace made the announcement in a statement released on their Twitter account.
"Their Royal Highnesses The Duke and Duchess of Cambridge are very pleased to announce that The Duchess of Cambridge is expecting their third child," the statement read.
"The Queen and members of both families are delighted with the news."
"As with her previous two pregnancies, The Duchess is suffering from Hyperemesis Gravidarum. Her Royal Highness will no longer carry out her planned engagement at the Hornsey Road Children’s Centre in London today. The Duchess is being cared for at Kensington Palace."
Read the press release in full pic.twitter.com/vDTgGD2aGF— Kensington Palace (@KensingtonRoyal) September 4, 2017