The truth behind Diane Sawyer, Katie Couric and Barbara Walters' relationships and rivalries has recently been exposed by Vanity Fair contributor Sheila Weller in a tell-all book titled "The News Sorority," and The Daily Beast featured the highlights of the gossipy tell-all on Wednesday, Aug. 27, Us Weekly has learned.

According to The Daily Beast's take on Weller's book, it pretty much focused on the rivalry between the former Good Morning America co-anchor, Sawyer, and Today host, Couric, way back in the early 2000s.

"When a friend of Diane's, a public figure, was being pursued by Katie's people, the wooed eminence got a call from [Diane's movie director husband] Mike Nichols, who said - in a very nice way, to be sure - that he and Diane would essentially cut off all social contact if their friend appeared on Today," an excerpt on Diane and Couric's rivalry read.

The Vanity Fair contributor then bravely claimed that Couric has badmouthed Sawyer when she secured an interview with a 57-year-old woman who gave birth to twins first. "I wonder who she blew this time to get it," Couric was even quoted to have said something below the belt against Sawyer.

Apart from Sawyer and Couric's rivalry, Weller also tackled the serious war between Sawyer and Walters. "Barbara and Diane were determined to kill each other - to wipe each other off the face of the earth," an ABC News staffer familiar with the conflict between the two was quoted by Weller.

While the book is getting a lot of attention based on The Daily Beast's write-up that mainly focused on the bad side of their television personalities' relationships and rivalries, the Facebook page for the big seems to give a different impression on what the book is really all about, noted MSN's WonderWall.

"As reporters and communicators of that which was beyond their control - the news of the world - and as women in a tremendously competitive professional arena in which their gender was an impediment, their ability to strongly control what they could control has been central to their success. Each has been self-aware and self-powering in a different way, and their careers offer lessons in female survival," the description of the book on its Facebook page read.

Moreover, an insider tells Us that Weller's book is not really something that will give everyone a bad impression about the aforesaid women. Instead, it is said to be "overall very positive" but the alleged feud amongst the ladies is "drummed up into something much bigger than it was."

"Weller got a lot right, but also got a lot wrong," the insider quipped.

The reps of the three have declined to comment on Weller's tell-all tome as of late.

"The News Sorority" is said to follow the rise of three respected newswomen, Couric, Sawyer and CNN's Christiane Amanpour. Walters was only mentioned to exemplify the bitter facet of Sawyer's rise to the top, according to Daily Mail.

Weller's discussion on Amanpour focused mostly on the CNN correspondent's fierce personality as a journalist.

The book details how Amanpour defied former CNN president Walter Isaacson's command to create a more balanced critical report on the implications of the events following the 9/11 attacks.

"Christiane had the power to push a piece through," an insider was quoted saying by Weller.