There's something very unique about the books we read as a teenager. Characters who introduced us to themes of sex and relationships are forever marked in our imagination. So too as are the authors who first opened our eyes to topics such as inequality, violence and fear of the unknown.
We can never again capture that moment when we discovered these potent, life-changing reads - but we can remind ourselves about why they were so great.
From the hapless heroics of characters such as Adrian Mole to the gritty realism of To Kill A Mockingbird and Judy Blume's brilliant Forever (starring erm, Ralph), these are the books that we grew up with, that changed us and challenged us and that formed part of who we are today. We're not going to lie, they're a pretty eclectic bunch.
Have we missed out your favourite teenage read? Let us know in the comments section below or on Twitter.