Their Royal Highnesses The Duke and Duchess of Cambridge are very pleased to announce that The Duchess of Cambridge is expecting a baby," the statement read. "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." Prince William's pregnant wife has been admitted to King Edward VII Hospital in Central London with Hyperemesis Gravidarum, an acute form of morning sickness, and is expected to remain there for several days. She and Prince William married in April 2011.