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In the eight months since Pippa Middleton stole the scene as maid of honor at   sister Kate's royal wedding to Prince William, she has been named one of the most photographed women in the world and dubbed "her Royal Hotness" by British tabloids.

Now the 28-year-old royal sister-in-law is said to be so royally hot over the media attention that she's taking legal action.

The U.K.'s Daily Mail reports lawyers for Middleton this week sent a cease-and-desist letter to around six media agencies that distribute paparazzi photographs worldwide.

The letter is said to warn the agencies that unless their photographers stop following Middleton she will pursue legal action, which could include an injunction and legal costs.

Last week, the Daily Mail's picture editor, Paul Silva, reported that 400 photographs of Middleton cross his desk every single day.

He also estimated that Middleton, who lives in London and works for her family's party planning business, typically has eight or nine photographers camped outside her door ready to snap her every move.

The letter is said to describe Middleton as being in "serious distress and anxiety" over the attention.

"It is extremely intimidating to our client to have to face a group of unknown men outside her home and office who pursue her both day and night," the Mail quotes the letter as reading.

Last November, Middleton reportedly struck a $622,000 deal with U.K. publisher Michael Joseph, an imprint of Penguin, to write "How to Be the Perfect Party Hostess."

Her face frequently graces the pages of  fashion magazines and tabloids, even in the U.S.

In August, cable channel TLC aired a one-hour special titled "Crazy About Pippa," a documentary that tried to answer the question of who is this British party planner and what is she really all about?

"Our interest stemmed from the fact that a pretty young woman entered Westminster Abbey as a sister of a bride, and emerged as a global phenomenon in the space of an hour," the film's executive producer, David Notman-Watt, said at the time. "It was literally within minutes of her appearing holding Kate's train, Twitter went crazy, Facebook went crazy."

Middleton's plea for privacy was sent to the agencies by the British law firm Harbottle and Lewis, which also represents Middleton's sister, Kate, and Prince Willliam, and William's father, Prince Charles, the Mail reports.

The legal backing for Middleton's request appears to come from a section of the  Protection From Harassment Act 1997 that was enacted in England shortly before the death of Princess Diana, who was known as "the most photographed woman in the world" and who died in a car crash while being chased by paparazzi.

The letter cites Section 1 of the law that says "a person must not pursue a course of conduct which amounts to harassment of another and which he knows or ought to know amounts to harassment of the other," according to the Mail.

Harbottle and Lewis did not comment on the letter, while St. James's Palace, which represents Kate and Prince William, told the Mail they did not represent or act for Middleton.