Stonewall has been slammed for promoting books about gender identity - described by critics as 'deeply concerning' and set out to make 'children feel less comfortable in their bodies' - for children as young as three.
'Are You a Boy Or Are You a Girl?' is penned by Sarah Savage, chief executive of Trans Pride Brighton and author and trans campaigner Fox Fisher, who is also a trustee of the event.
The book appears on Stonewall's list of 'LGBTQ+ inclusive books for children aged 2-4' under its 'Trans Inclusion' category, but a spokesperson said that they recommend parents use their discretion and follow publisher guidelines - which is ages 3+ for this book.
The description of the book on the charity's website says: 'When Tiny starts a new school, the other children keep asking whether they are a boy or a girl.
'The other children eventually come to realise that it doesn't matter what gender Tiny is. What matters is that Tiny is themselves.'
