DERRY, UK: nadine Coyle is reportedly writing a tell-all autobiography . The Girls Aloud singer is hoping to rival her former bandmate Kimberley Walsh by penning a revealing exposé about what really went on during the girl band’s 10 years in the spotlight. A source told the Daily Mirror newspaper: ‘’Nadine’s desperate to put her side of the story across. She doesn’t have a publisher yet but is planning to tout the book around for a big-money deal when it’s done. ‘’If all else fails she will self-publish via Amazon. She’s keen to boost her flagging UK profile.’’–EXPO