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The Duchess of Cambridge's photobook has topped the Amazon book chart the night before it is officially released.
Kate, 39, has written the foreward for the Hold Still book, which includes the 100 images chosen by the royal and a judging panel to represent the UK during the coronavirus lockdown.
The project was borne out of the duchess's passion for photography and thousands of people sent in their images which fell into three categories - helpers and heroes, your new normal and acts of kindness.
With galleries closed for most of the last year, Kate took the exhibition to the streets, with photographs shown on billboards and at bus stops around the country.
She announced a book of the images in March, which is released on Friday, 7 May.
And on the eve of the book's release, it was at the top of the Amazon bestseller chart, as fans pre-ordered to make sure they would have a copy on the day it comes out.
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In the introduction to the book, the duchess wrote: "When we look back at the COVID-19 pandemic in decades to come, we will think of the challenges we all faced – the loved ones we lost, the extended isolation from our families and friends and the strain placed on our key workers. But we will also remember the positives: the incredible acts of kindness, the helpers and heroes who emerged from all walks of life, and how together we adapted to a new normal.
"Through Hold Still, I wanted to use the power of photography to create a lasting record of what we were all experiencing – to capture individuals’ stories and document significant moments for families and communities as we lived through the pandemic."
Her chart success comes soon after similar pre-order success for Meghan Markle, Kate's sister-in-law, whose first children's book is at the top of many of the site's children's charts soon after it was announced.
The Duchess of Sussex, 39, wrote The Bench after being inspired by the relationship her husband Prince Harry had with their son Archie, who turned two on 6 May.
The story began as a poem, and the book has been illustrated by Caldecott-winning and bestselling artist Christian Robinson.
She announced the book on Tuesday and by Wednesday it had already taken two places in the top 10 of Amazon's children's fiction book chart, in the values and virtues category.
Proceeds from Kate's book will support the National Portrait Gallery and Mind, the mental health charity.