As part of their trip, the pair visited the Normandy American Cemetery – where 9,388 US troops who tragically lost their lives during World War Two are buried.
But some Twitter users are now convinced FLOTUS used a body double to make the visit, after footage emerged online.
The clip shows Melania carrying white flowers with her husband and both are standing in front of French President Emmanuel Macron and wife Brigitte.
The former model then kneels down at one cemetery and lays the wreath.
But the body language, positioning and appearance of Melania convinced some fans to wildly claim it wasn’t her at all.
“That’s the secret service agent posing as FLOTUS,” one wrote.
“Anytime you see her wearing glasses it’s the body double.
“You can also notice how Trump is super-handsy with her like never is with Melania.”
Another agreed, adding: “That and he isn’t making her stand way behind him.”
A third commented: “Melania’s double? Is that why the French First Lady is keeping her distance?”
The wild body double conspiracy first came to light in October 2017, when actor and comedian Andrea Wagner Barton suggested a body double replaced her for a public appearance.
Those who believe in the theory have then pointed out various occasions where the First Lady has used her body double for security reasons or when she has commitments elsewhere.
But, unsurprisingly, it has never been confirmed by official sources.
Trump even spoke out about the conspiracy after it re-emerged with a picture in March, dubbing it “fake news”.
It comes as Daily Star Online exclusively revealed how Melania kept her husband “in line” during their state visit to the UK.