They might be royalty, but like most families across the world the Prince and Princess of Wales and their children have affectionate nicknames for each other.
Recently, during the Coronation weekend, we got a glimpse into the family dynamic when all five visited Upton Scout Group in Slough.
As part of a The Big Help Out volunteering day, they helped to decorate a scout hut and had fun trying out a few activities.
During the day Kate was heard calling five-year-old Louis - who was on his first official visit - Lou Bugs.
The family were toasting marshmallows when the Princess said to him: "Pop that in the fire, Lou Bugs."
She was also heard calling him "poppet" when praising the youngster for his hard work, reports Mail Online.
Louis appeared to call Kate, on the other hand, Mama, while Charlotte, 7, used the moniker, Mummy.
William also called Kate Mummy when talking about her to his children, while Kate called William Papa in front of the trio.
Meanwhile, a video of the family at the Chelsea Flower Show in 209 revealed William calling his daughter Mignonette. The French word means 'small, sweet and delicate' or 'cute'.
Kate has also been known to call Charlotte Lottie.
Today William met survivors and bereaved relatives of the Grenfell Tower tragedy and said he was worried that "closure seems a long way off" for them.
Visiting Queen’s Park Rangers’ stadium in West London, Prince William heard how the football club was still helping the local community nearly six years on from the blaze which killed 72 people.
A public inquiry is still ongoing into the disaster - which happened on June 14, 2017 - and a draft report is expected by the end of the year.
Speaking to staff at Loftus Road, which is less than a mile from the Tower and became a focal point for the community in the aftermath of the fire, William asked: "Is it harder or easier because everyone knows the story?
"They all know each other very well. Grenfell is a name that lots of people have sadly heard. So, if you have a bereavement like that versus if you have a private bereavement where you have an option to tell people what’s going on - how hard is it to deal with one or the other?
"Because one thing I’m worried about is the community is always together and there are lots of investigations taking place, that closure seems a long way off."
