Quel gran pezzo dell'Ubalda tutta nuda e tutta calda (literally "That hottie Ubalda, all naked and all hot"), internationally released as Ubalda, All Naked and Warm (though translated to Spanish as "Ubalda la hermosa, ardiente y fogosa") is a 1972 Italian comedy film directed by Mariano Laurenti.
It gained a great commercial success and launched the "commedia sexy all'italiana" genre. Walter Veltroni defined the film a "cult-title" and a title which is "a piece of Italian history".
The main actors Edwige Fenech and Pippo Franco were reunited for the similar Giovannona Long-Thigh, released the following year.