Being part of the British royal family often means inheriting some pretty lengthy titles, so it's hardly surprising that many royals develop affectionate nicknames for each other to keep things casual at home.
And, it turns out the Duke and Duchess of Cambridge, who will of course, one day become our king and queen consort, are no different - because addressing each other as Duke and Duchess at the kitchen table would be a bit odd.
The couple are often affectionately referred to as Kate and Wills, instead of their real names, Catherine and William, but at home the royals have rather cheeky nicknames for one another.
