“Law & Order: SVU” star Mariska Hargitay posted a couple of sweet close-up selfies with now-scruffy former series co-star Christopher Meloni on Sunday — the first with the caption, “It’s on.” That’s a reference to their much-anticipated reteaming in the upcoming “L&O” spinoff titled “Organized Crime.”

Hargitay, 56, captioned the second smiling selfie with a simple “Easy like Sunday mornin. . .”

Meloni, who left “SVU” in 2011, played Detective Elliot Stabler for 12 seasons opposite Hargitay’s Detective Olivia Benson, who is now a captain heading into the 22nd season.

Meloni, 59, recently told The Post that he was “shocked” when franchise creator Dick Wolf reached out to him about the project. “I never thought this was going to happen, but the circumstances for me changed,” Meloni said. “So ‘yes’ became the correct answer.”

NBC announced last month that the spinoff was in the works, with Stabler returning to the NYPD “to battle organized crime after a devastating personal loss.”

Meloni’s eventual return to the “L&O” universe possibly shouldn’t catch fans by surprise, as he told The Post his departure was contention-free.

“How I left was a different issue and had nothing to do with the ‘Law & Order’ people, the ‘SVU’ people or with Dick Wolf,” he said. “I left with zero animosity, but I did leave clearly and open-eyed in going forward and finding new adventures.”

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Easy like Sunday mornin…

A post shared by Mariska Hargitay (@therealmariskahargitay) on Jul 19, 2020 at 9:55pm PDT

“I was like, ‘That’s what I want to do, keep moving forward,’ ” Meloni said. “I had done the ‘Law & Order’ way of storytelling, which they do really well, and I was interested in telling stories from a different angle — whether comedic or inhabiting a new world or doing it on different platforms.”

As far as reuniting Stabler and Benson, that’s a no-brainer, he added.

“It just has to be,” he said. “Benson and Stabler are inextricably linked, locked and connected. I think there is truly and deeply a worthwhile, inherent drama in exploring that relationship and the complexity of how Stabler left — the unresolved emotions both characters feel and how the fans feel.

“How my character left was really unsatisfying, I think,” he said. “It almost feels that we won’t do one or two [crossover] episodes and move on our merry way.”