Britney Spears threatens sister Jamie Lynn with defamation lawsuit

American singer, Britney Spears is set to sue her sister, Jamie Lynn, over her book.

Britney Spears threatened to sue her sister if she lies about her while promoting her book titled “Things I should Have Said”.

Britney’s lawyer, Mat Rosengart, fired off a cease and desist letter to Jamie Lynn on Monday, Jan. 17.

In the letter, Rosengart told Jamie Lynn to “cease and desist from referencing Britney derogatorily during your promotional campaign. If you fail to do so or defame her, Britney will be forced to consider and take all appropriate legal action.”

Rosengart writes in the letter obtained by Page Six: “We write with hesitation because the last thing Britney wants is to bring more attention to your ill-timed book and its misleading or outrageous claims about her.”

Rosengart adds: “Britney has not read and does not intend to read your book, she and millions of her fans were shocked to see how you have exploited her for monetary gain. She will not tolerate it, nor should she.”

He continues: “You of all people know the abuse and wrongdoing Britney had to endure during the conservatorship, after initially growing up with a ‘ruinous,’ alcoholic father. In fact, your own book reportedly states that your father ‘spent most of my life in that cycle of ruinous behavior. His bouts of drinking caused me periods of torment and sorrow’.

“As I have previously stated, having endured a 13-year conservatorship that stripped her of civil rights and fundamental liberties, Britney will no longer be bullied by her father or anyone else.”

Rosengart also said in the letter: “Britney was the family’s breadwinner and she also otherwise supported you. Publicly airing false or fantastical grievances is wrong, especially when designed to sell books. It is also potentially unlawful and defamatory.”