United Kingdom, Aug. 6 -- Kevin Federline is set to release a memoir.

The 47-year-old star - who was married to Britney Spears between 2004 and 2007 - is set to release You Thought You Knew, via the new audio imprint Listenin, on October 21.

Kevin said: "This book is extremely intimate and transparent.

"I achieved my biggest dreams, dealt with crushing heartbreak, and endured constant ridicule, all while becoming the father my children needed as they experienced nonstop emotional turbulence. If you've ever had questions, you'll find answers here."

The memoir is being billed as "deeply personal and emotionally grounded" account of Kevin's life.

The dancer - who has sons Sean Preston, 19, and Jayden James, 18, from his relationship wit...