Matt Baron / BEImages / Rex USA 1 / 15
Matt Baron / BEImages / Rex USA 1 / 15

Kristen Stewart's attorneys have threatened outspoken comic Joan Rivers with legal action over her description of the actress in her new book.

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In "Diary of a Mad Diva," the controversial funnywoman brands the "Twilight" star a "one-trick-pony" before making crude assumptions as to how she became successful in Hollywood.

According to, Stewart's team have demanded Rivers remove the section from the book, or face a possible defamation lawsuit.

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However, Rivers has laughed off the controversy. In a video posted on the website, she says, "I'm now being sued by Kristen Stewart. She obviously didn't read our disclaimer, which is it's a comedy book... I can't wait to get her to court...

"Her lawyer contacted my lawyer, which shows the sense of humor she has... zero... I'm a comedian. I've been doing it for 50 years. If people don't get it... Don't read the book... If you're going to take it seriously, you're a fool."

"Diary of a Mad Diva" is due for release next month.

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