Fans can recognize those blue eyes anywhere.
"Is that Bradley Cooper? OMG," one wrote, while another said, "Oh hey Bradley!"
Irina shared a pic of herself in all-black cat attire, posing next to a person dressed as a fearsome gorilla, with only their piercing blue eyes showing through the disguise. She later posted a blurry photo of what appears to be her gorilla companion out trick-or-treating on the city streets.
While it might seem impossible to identify the Star is Born actor from a blurry pic, fans pointed to another piece of evidence to bolster their case. Irina and Bradley, who reportedly split in June 2019, apparently wore the same costumes for Halloween together in 2017.
According to The Daily Mail, the couple took their 7-month-old daughter Lea trick-or-treating, with Bradley seen out in a furry gorilla suit. Irina was dressed as Catwoman with more prominent whiskers and a bolder red lip, compared to this year's ensemble.
So, fans are speculating that they reunited to take Lea, now 4, out for candy once again—and naturally pulled their same costumes out of the closet four years later.
Last week, Bradley was spotted in New York City carrying a small pumpkin and different spooky mask while preparing for Halloween.
He dated Irina for about four years prior to their breakup, and they proved they were on good terms just seven months later, when they reunited at a BAFTAs after party in February 2020.
"They have a good system in place for Lea and they take turns with her," a source close to the actor told E! News a month later. "They also come together as a family and do things when they can. They communicate a lot and are good friends for now. They both love their daughter more than anything and they come together for her."
"It was never serious," an insider close to Irina told E! News at the time. "[Kanye] wanted to pursue something with Irina that wasn't going to happen."
The second source said the singer got "very busy" with his Donda album. "They were in different places. It kind of fizzled out from there. They are still friendly and there's a lot of mutual respect. It just was never going to turn into a full-blown relationship," the insider noted.
E! News has reached out to Bradley's rep for confirmation, but hasn't heard back.