Several other actors support the cast and play versions of themselves as well, including Fabrice Luchini, Nicole Garcia, Benjamin Biolay, Melvil Poupaud and Hugh Skinner.

She now dresses like him, speaks like him, breathes like him and she delivers it with such command that others around her end up believing it and begin calling her "Marcello".

[1] Principal photography began on 21 August 2023 in Paris, and continued in Rome,[4] then in Latina and Formia, the latter of which was a city dear to Marcello Mastroianni.

[6] Marcello Mio was selected to compete for the Palme d'Or at the 2024 Cannes Film Festival,[7] where it had its world premiere on 21 May 2024.

[12] On AlloCiné, the film received an average rating of 3.7 out of 5 stars, based on 30 reviews from French critics.