Sean Young?

ya that was her mixed with cgi.

she did the scene, yes

She was listed in IMDB in 'rest listed alphabetically.' I thought they did a good job finding an actress to look so much like the original Rachel and was stunned to find it *was* Sean Youngl Looked at her pictures through the years and see that she has aged very well.

I also wondered how they did it, with a stunt look alike perhaps. But in that scene you could see her hands and they were old so figured they must've brought her back.

Yeah, I was having a debate in my mind too the second I saw whether it was the real Sean Young or CGI Sean Young. But I think it was neither, it was just partial cgi, they de-aged her with CGI like they've done in before in Many other movies, like in X-Men or Joy.

Before the film came out there were some reports that said Young secretly filmed some scenes for the sequel. After seeing the film I figured her appearance in the film was accomplished by amazingly de-aging her (I assumed it was accomplished by the same team that does the Marvel movies).

But according to an interview Villeneuve did with Game Spot, a lookalike actress with the same height and general appearance of Sean Young was cast to be in this scene. Young herself was then brought in to coach the stand-in actress to replicate her performance as Rachael. After they shot the scene the footage was given to a VFX company that spent a year making the lookalike look exactly like a young Sean Young as Rachael (they also got someone who sounds like her).

With that in mind, it’s clear Young didn’t film anything for this film. It was basically a lookalike, some coaching, and perhaps the most convincing CGI ever seen on screen that made Rachael’s return possible. At any rate, her appearance was uncanny and awe-inspiring.