Billy Crystal and Meg Ryan will recreate a famous scene from 1989's 'When Harry Met Sally' for a Hellmann's Super Bowl commercial

Meg Ryan and Billy Crystal recreated a classic scene from "When Harry Met Sally" for a new Super Bowl ad, with a special appearance by Sydney Sweeney.

It’s a reunion 35 years in the making, thanks to mayonnaise. More than three decades after the romantic comedy “When Harry Met Sally” first hit theaters, Billy Crystal and Meg Ryan are finally back together.

Billy Crystal and Meg Ryan star in a brand-new Super Bowl advertisement that calls back to their iconic deli scene in "When Harry Met Sally."

Actually, Katz’s Deli is out of the bag. Crystal and Ryan reunited to reprise their characters from their classic 1989 film When Harry Met Sally. 35 years later the couple is back at Katz’s Deli sitting at the very same table.

It's sweeping the nation," jokes the actor, who reflected on the 1989 rom-com in an interview with PEOPLE Billy Crystal says there’s a moment from When Harry Met Sally that fans have been quoting back to him lately — and no,

When I opened my Instagram feed and saw a picture of Meg Ryan and Billy Crystal together again, my first reaction was "AH!" — especially since they're sitting on a couch, just like they do at the end of When Harry Met Sally.

"When Harry Met Sally..." co-stars Meg Ryan and Billy Crystal are teasing a big announcement. The stars of the beloved 1989 film hinted at a future collaboration in a joint Instagram post Wednesday. "It's finally happening, we're reuniting for something iconic," Ryan wrote in the caption of the post. "Can't wait to show you all soon 💙."

It was so much fun,” Crystal told The Post of reuniting with Ryan more than three decades after their iconic 1989 rom-com.