If you're interested, when K-Middy finds herself on the blower to her gas supplier and needs to leave a surname she's got the choice of Windsor, Mountbatten-Windsor and Cambridge... But she'll never have an official surname.
Around 2,000 friends, family and dignitaries were present to witness the royal couple's nuptials back in 2011 and since then there's been good news after more good news for Wills and Kate.
Straight after the wedding William went back to his job as an RAF helicopter rescue pilot, Kate met the Obamas and the pair led the country in cheering on Britain's astounding summer of sporting success at the Olympics.
And by the end of 2012 the couple announced Kate was pregnant with their first child, with the pair welcoming baby Prince George in summer 2013.
MORE! British Royal Weddings are often lavish affairs that capture the attention of the entire nation and, in some cases, the entire world. Here are 7 things you should know about British Royal Weddings and Marriages...