All three Welsh children are helped to raise by nanny Maria Borrallo from birth. She even travels with her family so that Kate and William can carry out their royal duties. Maria used to live at Kensington Palace as well, but since the Welsh family moved to Windsor last year, the nanny has only started coming during pre-arranged office hours.

Prince George, Prince Louis and Princess Charlotte / Photo: Associated Press

So how are the future king and his brother and sister raised? According to express, one of the strangest rules they have to follow is that all three have to play outside, regardless of the weather. It's lots of bike rides, dog games, maybe a little gardening. The nanny of the Welsh children likes to teach them through play, that is, it can be assumed that she plays with them too and the children are not left to themselves.

Other rules include strict bedtimes (bedtime at 19:00 p.m.) and the introduction of new flavors and foods every few days to keep meals varied and healthy. The time spent in front of the screen is, of course, strictly limited. It is also the responsibility of the nanny to explain to the children what is expected of them at royal events.

Prince William and Princess Charlotte / Photo: Getty Images

The nanny of George, Charlotte and Louis speaks six languages, and she herself is from Spain. She first appeared in public with Kate and William during their 2014 tour of Australia and New Zealand, when they took little Prince George with them on a trip. Since then, Maria has accompanied the family on every such trip.

Maria Teresa Borrallo / Photo: Getty Images