US songstress Kelly Clarkson has blasted Clive Davis for spreading "false information" about her in his new memoir.

In a post on her official Twitter page, the former American Idol winner has disputed claims made by the music mogul in his new book 'The Soundtrack of My Life.'

In a long letter to her fans, Clarkson revealed that the 80-year-old industry legend is "spreading false information about [her] and [her] music."

She added: "I refuse to be bullied and I just have to clear up his memory lapses and misinformation for myself and for my fans. It feels like a violation. Growing up is awesome because you learn you don't have to cower to anyone - even Clive Davis."

Clarkson goes on to highlight a couple of claims made in the book.

"First, he says I burst into "hysterical sobbing" in his office when he demanded Since You Been Gone be on my album. Not true at all. His stories and songs are mixed up. I did want more guitars added to the original demo and Clive did not. Max, Luke and I still fought for the bigger sound and we prevailed and I couldn't be more proud of the life of that song. I resent him dampening that song in any way.

But, yes, I did cry in his office once. I cried after I played him a song I had written about my life called "Because Of You." I cried because he hated it and told me verbatim that I was a "sh*tty writer who should be grateful for the gifts that he bestows upon me." He continued on about how the song didn't rhyme and how I should just shut up and sing. This was devastating coming from a man who I, as a young girl, considered a musical hero and was so honored to work with.

But I continued to fight for the song and the label relented. And it became a worldwide hit. He didn't include that in the book (sic)."

Clarkson also defended her album 'My December' in the post.

He also goes on to say My December wasn't successful because I co-penned the album and it didn't have "pop hits". Well, first let me say, I've co-penned many of my 'pop hits.'"

After ranting about Davis' memoirs, Clarkson signed off on a more positive note, revealing she loves her job, fans and her label.

She finished: "And I am grateful for Clive for teaching me to know the difference."