The actors starred as Carrie and John James "Mr. Big" Preston, an on-again, off-again couple, throughout the show's 10 season run. The pair finally tied the knot in the series' 2008 flick, and continued their relationship in the film's sequel two years later.
In Parker's post, Carrie smiles happily as Big sweetly holds her face. Big's wedding ring is visible in the shot, a fact that's of note as some fans have expressed concern that the revival may serve to break up the pair.
"These 2," Parker, 56, captioned the pic. "I bet they stay out late tonight."
Earlier this month, the actors were spotted on set, with Parker's Carrie wearing a polka dot skirt, a fitted backless top, and a pink headband and heels, while Noth's Big looked dapper in a suit.
In a June interview with Yahoo Finance Live, Noth admitted that he was initially "hesitant" to reprise his role.
"It was a little bit of a sort of creative negotiation because I didn't really feel I had anything to offer in that role again," he explained. "It kind of felt like I had done it. But [executive producer] Michael Patrick King is just an incredible writer and has incredible creative ideas. Once we got together and talked about the potential of what we could do with the character, I was all in."