Kate, 38, a patron of the National Portrait Gallery, was asking for contributions to its Hold Still project, which aims to capture the spirit, mood, hopes, fears and feelings of the people as we deal with the outbreak. Appearing on ITV's This Morning, she confessed Prince George was more interested in spider sandwiches than school work. She revealed that, like many other parents with small children, she is finding that home schooling does not always go smoothly.
"George gets very upset because he just wants to do all of Charlotte's projects. Making spider sandwiches is far cooler than literacy work," she said.
She was referring to picture book Spider Sandwiches by Claire Freedman, which chronicles Max the monster's appetite for yucky food - with spider sandwiches his favourite.
The popular book is obviously a big hit with Princess Charlotte, five, and George, six.
A keen amateur photographer, she has won acclaim for portraits of her children, including snaps of Charlotte delivering food to vulnerable people on the Sandringham estate.
There is one of Prince Louis, two, painting, with one picture showing him astonishingly clean for Instagram and then, in another, the reality of him covered in paint. She said: "I should have taken a photograph of what I looked like after as well.
"Luckily, that wasn't documented but I was pretty much...I