Palace Confirms: William, Kate Pregnant Duke, Duchess of Cambridge expecting their first child By Evann Gastaldo, Newser Staff Posted Dec 3, 2012 10:26 AM CST 21 comments Comments Britain's Prince William, the Duke of Cambridge, and his wife Kate, Duchess of Cambridge arrive at a charity event for Absolute Return for Kids, ARK, in London, in this June, 9, 2011 file photo. (AP Photo/Alastair Grant, file) (Newser) – It's not a rumor this time: The Duke and Duchess of Cambridge are expecting. Buckingham Palace and Clarence House announced Kate Middleton's pregnancy, which is in its "very early stages," today, MSNBC reports. In addition to being Prince William's heir and third in line to the throne, the little one will be the first grandchild for both his family and the Middleton family. But it hasn't been an easy pregnancy so far: Kate was admitted to the hospital today with severe morning sickness, and will be there for several days.