I was thinking "Sim0ne" from 2002 with Al Pacino: "A producer's film is endangered when his star walks off, so he decides to digitally create an actress to subs

I was thinking "Sim0ne" from 2002 with Al Pacino: "A producer's film is endangered when his star walks off, so he decides to digitally create an actress to substitute for the star, becoming an overnight sensation that everyone thinks is a real person."