Former Toxic singer Britney Spears is planning to tell all about her troubled life. The star is reportedly set to sign a $14 million publishing deal to spill it all. Britney first stepped into the limelight on "The New Mickey Mouse Club" in 1992, before launching a solo career and becoming one of the most famous singers in the world. And now she is close to detailing her rise to stardom and recent troubles after landing a multi-million-dollar book deal to write her memoirs, according to the London's Daily Mirror. A source tells the newspaper, "There have been numerous unofficial autobiographies about Britney, but she's never agreed to pen her own tome -- until now. "And some of the stories she's got are absolute dynamite. She's kept diaries, so there's nothing she'll leave out unless she wants to. If the deal goes ahead she will write three and five books throughout the next decade -- it's one of the most lucrative book deals in showbiz history."