Celebrity | Kate Middleton Palace Confirms: William, Kate Pregnant Duke, Duchess of Cambridge expecting their first child By Evann Gastaldo Posted Dec 3, 2012 10:26 AM CST Copied 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) 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. Read These Next More details coming out about the last party the Reiners attended. Susie Wiles thinks Trump has an 'alcoholic's personality.' First Australia victims lost their lives confronting the shooter. An MIT nuclear science professor was fatally shot at his home. Report an error