Kelly Osbourne vs. Dannii Minogue

Actress Kelly Osbourne arrives for the presentation of the Anna Sui 2011 Spring/Summer collection during New York Fashion Week September 15, 2010. REUTERS/Lucas Jackson (UNITED STATES - Tags: FASHION ENTERTAINMENT)

Kelly Osbourne has declared war on Dannii Minogue after the book launch of Dannii’s autobiography.

The release of Dannii Minogue’s autobiography – Dannii Minogue: My Story – has doubtlessly been the literary event of the year. If not the decade.

One person that’s been gravely disappointed by the book’s content however is Kelly Osbourne. She’s taken umbrage with Dannii’s depiction of Kelly’s mum Sharon as a mean-spirited bully.

Dannii and Sharon had a fractious-at best relationship during their time as judges on the X Factor. To this day Dannii maintains that the older woman made her cry on numerous occassions. Kelly does not agree.

‘The best thing to happen to dannii’s career was that my mother hated her,” she Tweeted. “She needs to shut her mouth and concentrate on motherhood… trust me when I say Dannii is the devil.”

She wasn’t finished there though. Kelly also insinuated that she knew some kind of dark, shadowy secret which could damage Dannii’s career: “Dannii you are so lucky that I respect Simon enough to not tell the truth about what really happened. wa wa wa you poor middle aged victim.”