Bosisio was born in Milan in the end of January 1936. From 1953 to 1955, She attended the Accademia d'Arte Drammatica in her hometown. Bosisio was a stage actress with the Luca Ronconi company, and was also active as a stand-up comedian. Occasionally active in films in character roles, Bosisio is best known as "Pina", the wife of Paolo Villaggio in several chapters of the Fantozzi film series. Bosisio also appeared in television roles since 1956. Since 1983, Bosisio focused her work on stage.
