President Trump insists he owns a real Renoir painting — but a Chicago museum says the version he has isn’t the real deal.

The Art Institute of Chicago said it owns the authentic version of the “Two Sisters (On the Terrace)” painting by French impressionist Pierre-Auguste Renoir and that it’s been hanging in its gallery since 1933.

Trump’s Renoir, meanwhile, adorns his penthouse at Trump Tower in Midtown Manhattan. It could be seen in the background during an interview he did with “60 Minutes” after winning the 2016 election.

The strange story behind the provenance of the president’s painting resurfaced last week on Vanity Fair’s “Inside the Hive” podcast.

Trump’s biographer, Tim O’Brien, said that years ago while writing his book on the millionaire real estate developer, he spotted the colorful piece hanging in his private jet.

O’Brien asked if it was real. Trump said it was.

“No, it’s not, Donald,” O’Brien recalled replying. But Trump was adamant it was authentic.

“Donald, it’s not,” O’Brien said. “I grew up in Chicago, that Renoir is called ‘Two Sisters (On the Terrace),’ and it’s hanging on a wall at the Art Institute of Chicago. That’s not an original.”

Trump disagreed but dropped the conversation.

“I’m sure he’s still telling people who come into the apartment, ‘It’s an original, it’s an original,’” O’Brien said on the podcast. “He believes his own lies in a way that lasts for decades. He’ll tell the same stories time and time again, regardless of whether or not facts are right in front of his face.”

Art Institute of Chicago spokeswoman Amanda Hicks told the Chicago Tribune that its painting was given to the museum by Annie Swan Coburn, who bought it for $100,000 from art dealer Paul Durand-Ruel. Durand-Ruel purchased the painting straight from the artist in 1881, according to Hicks.

The museum is “satisfied that our version is real,” Hicks said.

The White House didn’t respond to questions about Trump’s painting, the Tribune reported.