Prince Andrew has been asked to prove his inability to sweat by Virginia Giuffre Roberts' lawyers.
In 2019, the Duke of York famously claimed in an interview with BBC that he never got sweaty on the dancefloor with Giuffre in 2001 at a club in London before they had sex because he has a condition that makes it impossible for him to perspire.
The claim was ridiculed and the next day newspapers published photographs of the Duke soaked in sweat at various times.
The court documents also reveal that Giuffre's lawyers are also asking for deeply personal information from the British royal including "any documents concerning any allegations of sexual abuse or extramarital sex made against you".
The request is part of a lawsuit Giuffre filed in August for infliction of emotional distress and battery, The Times reports.
Giuffre, nee Roberts, 38, claims that she was sexually assaulted by the Queen's second son three times: once in New York City, once in London at Maxwell's home, and once on Epstein's private island, known as Little St. James, in the US Virgin Islands.
The 38-year-old filed a lawsuit in New York back in August. Prince Andrew has denied all allegations against him.
It comes as Prince Andrew asked a judge to dismiss the sex abuse lawsuit against him by claiming Roberts was over the age of consent.
Roberts filed the case under the New York Child Victims' Act - which allowed victims to sue their alleged abusers if they were younger than 18 when it took place.
At the time, Virginia said she was holding Prince Andrew "accountable for what he did to me".
But the royal has asked a judge to throw out the lawsuit, claiming the legislation is "unconstitutional" and the "issue of consent is unsettled".
Per Independent, Prince Andrew's lawyer has argued for the civil claim against the royal to be thrown out by claiming that the woman who has accused him of sexual assault has a "tortured interpretation" of the law.
The pressure has been mounting on the Duke of York after British socialite Ghislaine Maxwell, 60, was found guilty of helping the late financier Jeffrey Epstein sexually abuse teenage girls, Reuters reports.
She was found guilty of five federal charges, including sex trafficking of a minor, transporting a minor with the intent to engage in criminal sexual activity, and three related counts of conspiracy.