In the book she talks about how upsetting her time on The X Factor was when Sharon Osbourne was there. She basically says that Sharon picked on her constantly.

Dannii writes, "She said I'd had too much Botox and plastic surgery and looked ridiculous, and I was nothing more than a mosquito she wanted to flick away. On one chat show, goaded by an almost salivating Graham Norton, Sharon rolled around on the studio floor, pointing at her backside, and comparing my face to it.”

Well Kelly obviously did not take too kindly to hearing what was in Dannii's book, within a heartbeat she had taken to Twitter to have a rant.

Kelly wrote: "The best thing to happen to Dannii's career was that my mother hated her she needs to shut her mouth and concentrate on motherhood!"

She continued, "I will be the first one to admit that my mother did not play her cards right when came to Dannii but trust me when I say Dannii is the devil."

Ooh er, saucer of milk for Ms Osbourne please. Who's side are you on?