Girl band Little Mix is releasing a new "behind-the-scenes" autobiography with Penguin this autumn.
Editorial director Fenella Bates struck a deal for world rights for Our World through Modest Management, to publish on 20th October.
Since winning the X-Factor in 2011, Little Mix has achieved 14m record sales worldwide and released three platinum-selling albums. They are currently in the middle of their second sell-out arena tour.
The book will reveal insight into both their personal lives and their professional success, from the "many highs", such as performing in front of thousands of people, to "the lows". Band member Perrie Edwards' love life has come under scrutiny, in particular, following her cancelled engagement to former One Direction singer Zayn Malik, who has since launched a solo career.
The book will be a celebration of the girls' "incredibly close friendship" through it all, complete with exclusive photos as well as style advice, the publisher said.
The hardback book will be priced £16.99.