Rumours of a "fake Melania" first began swirling in October last year — and new photos of the US First Lady in Brussels have reignited the popular theory.
As President Donald Trump and his wife touched down in Brussels earlier this week ahead of the NATO summit, photographers snapped pictures of the couple stepping off Air Force One.
And it didn't take long for conspiracy theorists to go into overdrive, with many claiming Mrs Trump didn't look like herself — and speculating it was proof she had a body double standing in for her.
The new claims come just months after Mrs Trump, 48, all but disappeared from public view after an announcement made by her staff on May 14 revealed she had undergone an embolisation procedure to treat a kidney condition, which was described as benign.
The mother of one remained in a military hospital for five nights before returning to the White House on May 19 to recover, and wasn't seen for almost a month.
Her absence sparked endless rumours, with some believing her illness was used as an excuse to cover up the fact she had moved back to Trump Tower in New York with 12-year-old son Barron, or had undergone a facelift.
Despite the rampant speculation, White House staff refused to release any more information about Mrs Trump's illness, operation and subsequent recovery in order to protect the First Lady's privacy.
But the First Lady's body double rumours first went viral back in October 2017, after actor and comedian Andrea Wagner Barton posted her theory on Facebook.
Those who believe in the theory cite the First Lady's changing appearance as "proof", while some have also pointed out a secret service agent with an uncanny resemblance to Mrs Trump.
According to the theory, Mrs Trump has a body double who takes her place at public events at certain times, and it has been fuelled by her penchant for sunglasses, clothing and accessories that often cover part of her face.
But the First Lady isn't the first celebrity to be accused of using a decoy.
In 2016, there were claims Hillary Clinton had been replaced by a body double and even a hologram after she collapsed at a 9/11 memorial service in New York after a battle with pneumonia.
And earlier this year, some theorists claimed a bizarre video of Meghan Markle appearing to "glitch" was evidence the now Duchess of Sussex had been replaced by a robot.