When it comes to the Royal Family, there are a number of rules and strict protocols that those around them must follow. From curtseying, to what to call them, it's important to get it right.
One person who spends a lot of time with the younger members of the family is Maria Borrallo - nanny to Prince George, Princess Charlotte and Prince Louis.
The Norland Nanny was hired by the Duke and Duchess of Cambridge when George was just a few weeks old and has settled nicely into the household, living at Kensington Palace and accompanying the children on royal tours and family holidays.
And while we're sure she has a nice time looking after the little ones, it turns out there is something she's "banned" from saying to them.
Read more on mirror.co.uk