Music mogul Clive Davis dropped a bomb on Tuesday with the release of his new memoir "The Soundtrack of My Life" -- and set off subsequent explosions in the process.

In the book, the 80-year-old revealed he's a bisexual, saying he's been involved with men for nearly 30 years. He also talked about the many artists he's worked with throughout his career, including Whitney Houston and "American Idol" Season 1 winner Kelly Clarkson.

Davis details the clash he had with Clarkson before the release of her 2007 album "My December," and Kelly was not thrilled with what he had to say, lashing out on her WhoSay account:

"So I just heard Clive Davis is releasing a memoir and spreading false information about me and my music. 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..."

Clarkson goes on to detail the issues she has with the producer's claims, all of which you can read here. Clive was quick to fire back though, taking to his Twitter:

"...I think Kelly Clarkson is a tremendous vocal talent and performer. In the book, I provide an in-depth look at our years together during which we shared major multi-platinum success, as well as a few creative differences. I am truly very sorry that she has decided to take issue with what I know to be an accurate depiction of our time together ... I had every fact checked with five independent individuals who were present on a daily basis throughout it all. The chapter as it is written was thoroughly verified by each and every one of them. I stand by the chapter as written in my book."

Me-ow. So we gotta ask:

We're sure this battle will make our Biggest Feuds of 2013 list, but for now click "Launch Galley" above to see the biggest celeb fights of last year!