A former nanny who was employed by the Kardashian family is to write a tell-all book.

Pam Behan - who worked as a nanny, personal assistant and cook for Bruce and Kris Jenner for several years before the family shot to fame thanks to their reality show Keeping Up with the Kardashians - is reportedly set to reveal all about the time she spent working in their home in a telling new tome.

According to TMZ.com, she describes Bruce's sons Brandon and Brody - who starred in The Hills and has dated the likes of Lauren Conrad and Kristin Cavallari - as "spoiled and disrespectful", and admits she came close to losing her job after slapping Brandon one day.

Despite the Kardashian sisters Kim, Kourtney and Khloe allegedly being "very fond" of Pam, the former nanny is said to have vowed to reveal "intimate details" about the whole family - who are worth a combined total of $65 million - in the upcoming tome.

While the book has been pitched to several "major" literary agents, it is unclear whether a deal has yet been agreed.