Colouring Books for Adults Top Amazon Bestseller List

The bestselling title on Amazon in the US right now is not Harper Lee's hugely anticipated second novel, Go Set a Watchman, or George RR Martin's Song of Ice and Fire fantasy series, or even Zoella's much-mocked but much-bought young adult hit, Girl Online. Instead, Scottish illustrator Johanna Basford is topping the charts, with her colouring books for adults taking top spots on Amazon.com's bestseller lists.

Basford's intricately drawn pictures of flora and fauna in Secret Garden have sold 1.4m copies worldwide to date