She may only be eight years old - but she's already got the very grand title of Her Royal Highness Princess Charlotte of Wales.
But the young royal, like many other members of the Firm, has been given several nicknames - and one given to her by dad Prince William is very unusual.
The unlikely moniker was revealed several years ago when the Prince and Princess of Wales took Charlotte and their two other children Prince George and Prince Louis to the Chelsea Flower Show.
At that year's show, Kate had designed an incredible 'Back to Nature' garden, which had gushing water features and a fun swing.
In adorable footage, the three children could be seen running around enjoying the creation - and at one point William called out for his daughter.
But instead of calling her Charlotte, he called out for 'Mignonette'. The French word is said to mean "small, sweet, and delicate" or "cute". Older French definitions also show it can mean gentle and kind.
It's rather different from the nickname Kate has previously been known to call her daughter - Lottie.
During an official trip to Northern Ireland in 2019, Kate met a fellow mum called Laura-Ann and her son.
Laura-Ann posted about the meeting on Instagram, claiming Kate had revealed her nickname for Charlotte during their conversation.
She said: ”She asked how old Bertie is, and I said he is four and she said, 'Oh, he's the same age as Lottie.' She calls her Lottie!"
Charlotte had a busy Coronation weekend as she attended the crowning of her grandfather King Charles at Westminster Abbey alongside her parents and her brothers and appeared on the Buckingham Palace balcony.
The eight-year-old mirrored Kate in her own Alexander McQueen dress and cape in ivory silk crepe with ivory satin stitch embroidery featuring rose, thistle, daffodil and shamrock motifs to signify the four home nations.
She also wore a Jess Collett x Alexander McQueen headpiece silver bullion, crystal and silver thread work, similar to the one worn by her mother.
The next day she joined William, Kate and George for the Coronation concert at Windsor Castle, where they were all seen dancing to Take That.
Meanwhile, on the Bank Holiday Monday, she was with the rest of her family for the Big Help Out, where they helped to renovate a Scouts Hut in Slough.
There they had a go at painting, drilling and archery before toasting marshmallows and being treated to a smore.
