We're sad to reveal that Kate 'n' Wills will no longer be Kate 'n' Wills in just a couple of hours. Buckingham Palace has announced that the Queen has given William the title of the Duke of Cambridge. A dukedom is the highest rank in the British peerage.
Kate will be known as the Duchess of Cambridge after the royal wedding ceremony. The couple has also been given the Scottish titles of Earl and Countess of Strathearn - a possible nod to the fact that they met at St Andrews University, perhaps?
The couple's third title (greedy!?) is a Northern Irish one, Baron and Baroness Carrickfergus.
Buckingham Palace said in a statement: "The Queen has today been pleased to confer a Dukedom on Prince William of Wales. "His titles will be Duke of Cambridge, Earl of Strathearn and Baron Carrickfergus. Prince William thus becomes His Royal Highness The Duke of Cambridge and Miss Catherine Middleton on marriage will become Her Royal Highness The Duchess of Cambridge."
As well as a duchess, Miss Middleton is also 'technically' Princess William of Wales. According to protocol, she is not officially Princess Catherine as she was not born with royal blood. A tad sexist we reckon. Let's hope the Queen changes her mind...