Brigitte Macron is set to take legal action over an internet conspiracy theory that she is a transgender woman and was born male.
The French first lady has been targeted on social media with the false claims, after they were published on a far-right website in September then circulated by conspiracy theorists.
The rumours claim she was born male under the name Jean-Michel Trogneux.
The name has trended on social media with tens of thousands of mentions.
A lawyer for Mrs Macron – who is the mother of three adult children from her first marriage – confirmed she is taking action.
“She has decided to initiate proceedings, it is in progress,” lawyer Jean Ennochi confirmed to the AFP news agency.