AceShowbiz - Mel Gibson's ex-girlfriend Oksana Grigorieva is to reveal all about the former couple's romance, bitter break-up and custody battle in a candid chat with talk show queen Oprah Winfrey, according to reports. The Hollywood actor has seen his private life played out in the press since splitting from Grigorieva earlier this year, with the Russian singer accusing her ex of beating her and knocking out her teeth during an argument in January.

Taped disputes between the pair have since leaked online, in which a man thought to be Gibson can be heard admitting to the attack before launching into an expletive-laden rant. Police are currently investigating the domestic abuse claims but Grigorieva will open up about the troubled relationship in an upcoming TV interview on "The Oprah Winfrey Show", according to Us Magazine.

Executives at Winfrey's production company Harpo reportedly beat producers from U.S. program "60 Minutes" to land the Grigorieva exclusive.