President Macron and his wife, Brigitte, have accused Candace Owens, the American conservative commentator, of intensifying her character assassination of the French first lady to boost her online following since they sued her for libel in the United States.

The couple have updated their legal action, brought in Delaware in July, to describe the way Owens has expanded on her false claims that Mrs Macron, 72, was born male.

“Since we filed this lawsuit, Ms Owens has only strengthened our case by doubling down on, and escalating, her knowingly false and defamatory rhetoric against the Macrons,” their lawyers wrote.

“She has continued to use her podcast to expand her lies about the Macrons, sell merchandise making fun of the Macrons, and collect donations based on her ‘reporting’.”

Owens, 36, has this month started a new season of Becoming Brigitte, a series she started last year, and she has “gone so far as to suggest that the Macrons are involved in an alleged conspiracy to distract Owens from investigating Charlie Kirk’s assassination,” the amended lawsuit adds.