Melania Trump delayed her move to the White House from New York in 2017 as she renegotiated her prenuptial agreement with President Donald Trump, an upcoming book claims.

In the new book, “The Art of Her Deal: The Untold Story of Melania Trump,” author and Washington Post reporter Mary Jordan says the first lady used her relocation as a bargaining chip.

The former model who married Trump in 2005 needed time to cool off after headlines about his alleged sexual transgressions dominated his campaign — and she postponed her relocation “to amend her financial agreement with Trump,” Jordan writes, according to the Post.

She reportedly called the renegotiation, “taking care of Barron,” a reference to her only child with the president.

“She wanted proof in writing that when it came to financial opportunities and inheritance, Barron would be treated as more of an equal to Trump’s oldest three children,” Jordan claims, according to the Post.

A spokeswoman for the first lady dismissed the new tome as inaccurate.

“Yet another book about Mrs. Trump with false information and sources. This book belongs in the fiction genre,” Stephanie Grisham, the first lady’s chief of staff, told the Post.

When Melania broke with tradition and took five months to move from Trump Tower in Manhattan to be with her newly inaugurated husband in Washington, D.C., the delay was attributed to Barron wrapping up his school year first.

“Looking forward to the memories we’ll make in our new home,” she finally wrote in a June 2017 Twitter post that added the hashtag #MovingDay.

President Trump, married three times, is a well-known fan of prenuptial agreements.

“Today you have to have a prenup,” he told Larry King in 1997. “I’m a big prenup believer, even though they’re nasty, terrible documents, I’m a big believer in that stuff.”