Federline to tell all on 'Oprah'

Kevin Federline is expected to reveal all about his troubled ex-wife Britney Spears in a TV interview with chat show queen Oprah Winfrey.

Federline is expected to make an appearance on US show 'Oprah' early next year, for what is promised to be an explosive interview detailing the reasons behind the breakdown of his marriage to the pop superstar and their bitter custody battle for sons Sean Preston, two, and Jayden James, one.