It's been four years since that historic moment when Kate Middleton married her Prince. After a perfect ceremony, followed by that cheeky balcony kiss the Duke and Duchess of Cambridge…as they became known…got on with married life. Doing all the normal things that any newly weds do. Getting a new home. Adopting a pet in the form of Cocker Spaniel Lupo and having a baby, the adorable Prince George. But of course these two are no normal couple…they're royalty…and with that comes a whole load of responsibility.