Meg Ryan shared a photo of her and When Harry Met Sally co-star Billy Crystal, promising “something iconic.” We take a guess at what it could be.

When Harry Met Sally alums Meg Ryan and Billy Crystal, clad in his character’s iconic sweater, announced they are reuniting for a new project: “It’s finally happening.”

"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 💙."

"When Harry Met Sally" co-stars Meg Ryan and Billy Crystal have yet to release the details of their upcoming "iconic" collaboration.