L'Unique (1986)

Michel (Tcheky Karyo), an electronic hacker, discovers that his former girlfriend, now a famous singer (Julia Migenes), is now in the proper sense of the word, to be "double" . The academic0 Colewsky (Sami Frey) is developing a holographic cloning method that reproduces the moving three-dimensional image of living beings.
Cast and Information
Directed By: Jérôme Diamant-Berger
Written By: Jean-Claude Carrière, Olivier Assayas, Jacques Dorfmann, Jérôme Diamant-Berger
Starring: Tchéky Karyo, Sami Frey, Charles Denner, Julia Migenes, Thierry Rode, Jezabel Carpi
Genre: Sci-fi
Country: France