Britney Spears sends sister Jamie Lynn cease and desist, reportedly requests millions from father Jamie

foxnews.com:

Britney Spears is taking action. The 40-year-old pop star and her attorney Mathew Rosengart have taken legal action against her father Jamie and sister Jamie Lynn as the court battle regarding her 13-year conservatorship drudges on.

Fox News Digital obtained a cease and desist letter that Rosengart sent Jamie Lynn on Monday, telling her 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." The singer is currently promoting her upcoming book, "Things I Should Have Said." "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," the letter continues.

Britney Spears has taken legal action against her father Jamie and sister Jamie Lynn. (Steve Jennings/WireImage) Rosengart added that his client has no intention to read the book, but is shocked that Jamie Lynn has "exploited her for monetary gain." "She will not tolerate it, nor should she," the attorney stated.