With their hit records, concert films, and countless international magazine articles and radio interviews, you would think that One Direction have already revealed everything there is to know about themselves.

But the band announced today via Instagram that the boys have collaborated on an autobiography titled 'Who We Are' which will be hitting bookshelves and digital stores on Sept. 25.

On the 'Who We Are' Amazon page, where fans can pre-order the book, the official description is listed as follows:

For the first time EVER, global superstars One Direction are releasing their 100% official autobiography, offering a new, intimate insight into their lives as never before seen or heard!

In their first in-depth autobiography, pop sensations Niall, Zayn, Liam, Harry and Louis tell the story of their lives. From nervously auditioning for the X Factor and meeting each other for the first time, to filming their hit movie This is Us and releasing their bestselling third album, Midnight Memories, it really has been one incredible journey. For the first time, the boys’ loyal fans will be given an unprecedented insight into all of it, from their humble beginnings and lives before the X Factor, to recording their first single, touring the world, winning awards, breaking records, and much, much more.

What has it been like for them? What did they really think of each other when they first met? What inspires their song-writing? How do they handle life on the road and long breaks away from those they care about and love? And what do they think is next for them as a band who have achieved so much so quickly?

Beautifully produced and filled with never-before-seen snaps, drawings and notes taking you behind the scenes of the creation of their music, their tours and their incredible friendship, One Direction are ready to lay themselves bare in a way we’ve never seen before.

Get ready for the incredible story of a lifetime from of an incredible set of lads

The announcement comes just a few days after the band announced that a 'Where We Are' concert film will be hitting theaters on October 11 and 12. The film will feature concert footage from their Milan, Italy tour stop, as well as behind the scenes interview clips.

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