The former professional dancer will dig into his career and tumultuous relationship with Spears in You Thought You Knew, out in October ...

Britney Spears' ex Kevin Federline has announced that he will release a tell-all memoir, 'You Thought You Knew,' in October.

Kevin Federline is opening up. The dancer and DJ, who was once married to Britney Spears, has announced the release of his ...