Wolff's claim follows reports that Melania has spent very little time at the White House since Trump's second inauguration.
The White House has vehemently denied Wolff's claim, calling him a "blithering idiot" and saying his statements are “blatant lies”.
Melania has made few public appearances alongside the president, though she has stated her intention to reside in the White House while also spending time in New York and Palm Beach.
Sources suggest Melania's limited presence at the White House may be due to concerns about her family's safety following assassination attempts against Trump.