There are many rules that must be followed when you're a part of the royal family - whether it's stair etiquette for women or being unable to do this if you ever have dinner with the monarch. The youngest royals, like the Wales' children, also have strict guidelines they must adhere to (and their nanny ensures that they are always on their best behaviour), and their mother, Kate Middleton, is technically supposed to bow to her little ones.
While many of their rules and traditions mean that their day to day lives are unfathomably different to ours, there is one thing that they do that shows they're not so different: they love to give each other nicknames.
