The suit came after Trump threatened legal action against several publications that picked up the story, which was sourced to a Slovenian magazine that reported that Trump once worked for a New York modeling agency in the 1990s that provided escort services to wealthy clients.

A statement from Charles Harder, the lawyer representing Trump, called the allegations "100% false" and "tremendously damaging to [Trump's] personal and professional reputation." Melania is married to Donald Trump, the Republican nominee for president.

In addition to the Daily Mail, the lawsuit also includes Webster G. Tarpley, a Maryland blogger, as a defendant.