Lottie has had enough. She's tired of being sexually harassed, interrupted and dismissed.

So for one month, she decides to call out every bit of sexism she sees - no matter the consequences. With the reluctant help of the annoyingly cute Will, her project goes viral. But as the backlash intensifies both online and off, Lottie starts to wonder: can one girl really make a difference? And more importantly, will speaking up cost her more than she ever imagined?

'Brings to mind the late, great Louise Rennison...A book to press into the hands of every teenage girl you know.' The Bookseller