New book names the ‘number one' leaker in Trump’s White House — and it’s a huge surprise

A new book, which is set to hit bookstores Tuesday, reveals who the “number one” leaker is in President Donald Trump’s administration — and it’s someone no one has suspected.

Trump’s right-hand woman, White House counselor Kellyanne Conway.

What does the book allege?

Ronald Kessler —whose new book, "The Trump White House: Changing The Rules Of The Game," releases on Tuesday — told CNN host Jake Tapper on Sunday that Conway leaks more information to the media than any other White House staffer.

Kessler also accused Conway of badmouthing current and previous administration officials, including former White House chief of staff Reince Priebus and even Trump’s own family, Ivanka Trump and Jared Kushner, who serve as senior advisers.

"While I was interviewing Kellyanne at the White House, she forgot that she was on the record and she started lashing into Reince Priebus,” Kessler said. "She said the most mean, cutting and honestly untrue things about Reince and I didn’t even include them in the book because they were so unfair."

"She also let into Jared and Ivanka, saying that they leak against Steve Bannon," he explained.

Kessler went on to claim other White House staffers have seen texts Conway sent to journalists leaking information.

"I know that White House aides have seen texts that she has sent to other journalists dissing her colleagues and leaking material. So if you wonder why there are so many leaks out of the White House, one reason is Kellyanne is the number one leaker," he said.

What else did Kessler reveal?

During his short appearnce on CNN's "State of the Union," the best-selling author revealed that it was Ivanka and Kushner who pushed for the firing of then-FBI Director James Comey last May, in addition to the hiring of Anthony Scaramucci last summer. Both moves didn't end well for the administration.

"Trump understands that [Ivanka and Kushner] are problems. He has said to them, ‘Maybe you should go back to New York.’ It implied that he didn’t really want them...but he’s certainly not going to fire a family member, so they remain the Teflon aides," Kessler said.

Watch Kessler's interview below: