Bringing up three lively children as well as juggling royal duties is no doubt sometimes stressful for the Duchess of Cambridge.
But it seems she has a very relaxing hobby that has many devotees across the world - and it was revealed by her husband Prince William.
In 2016, he told how she is a fan of colouring books as he carried out an investiture ceremony at Buckingham Palace.
It came as he presented an OBE to illustrator Johanna Basford, who has released many adults colouring books, including the Secret Garden and Enchanted Forest.
After the ceremony, Johanna took to Instagram where she wrote about her conversation with the Prince.

She said: "He told me his wife likes my books. She colours. Kate is one of us!
"Now this makes perfect sense. Why wouldn’t she? A busy mum with what I imagine is a lot of stress, trying to raise and protect a family."
Colouring fans have long advocated the stress-relieving properties of grabbing pens or crayons and getting creative.

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And wellness expert Antonia Harman told OK! : "Colouring in is deeply relaxing. We spend so much time on devices and looking at screens whereas using your hands and creating beauty of any kind will help you disconnect from tech and connect to yourself.
“Kate is clearly interested in art having studied history of art at university so this colouring no doubt helps her connect to her passion for art and beauty.”
However, it appears that colouring is not the only creative hobby that Kate enjoys.
She's an accomplished photographer taking gorgeous pictures of her children and she also showed off her amazing drawing skills before.

But one creative pastime she's admitted being "really bad" at is knitting.
Kate's revealed she was trying her hand at knitting way back in 2013 when she was pregnant with Prince George.
According to Hello!, she told a group of royal fans while visiting Glasgow: "I've been trying to knit and I'm really bad. I should be asking for tips!"
Last year, during a trip to Bradford, Kate visited Older Yet Wiser - an organisation that supports grandparents - and met with some grandmothers who were showing off their crocheting skills.
And she admitted that her attempts to knit George a jumper had gone slightly awry.
She told the group: "I tried knitting when I first had George. I tried to knit him a very special jumper, but I got halfway down and it splattered. It's such an amazing skill."