What actors and actresses appeared in La ragazza sotto il lenzuolo - 1961?

The film you're referring to is likely "La ragazza sotto il lenzuolo" (The Girl Under the Sheet), an Italian comedy released in 1961.

Here are the main actors and actresses who appeared in the film:

* Alberto Sordi as Alberto Anselmi

* Sandra Milo as Sandra

* Franco Fabrizi as Roberto

* Lidia Alcorta as Lidia

* Mario Carotenuto as Mario

* Sergio Fantoni as Sergio

* Vittorio Caprioli as Vittorio

* Paolo Ferrari as Paolo

* Gianni Magni as Gianni

This film, which involves a series of mistaken identities and romantic entanglements, is a classic Italian comedy that showcases the talents of the popular actors involved.