This is not from "La Bustarella" but from "Il Napoleone", it seems to be a very similar show that ran on Antenna 3 from 1979-1980.
Three of the more interesting games have been clipped. In one, bikinis are swapped under a strobe light with a mannequin. In the second one, teams strip to fill a large-sized jeans as much as possible. There's also a non-game topless dancer segment where the dancer is decked in bananas (shades of Josephine Baker, eh?)
The third game is more complicated, apparently inspired by operetta. A lady plays the wife, another plays the husband, and another plays the sailor whom the wife is having an affair with. The "husband" goes out to "buy cigarettes", which in the game means he does three laps around the stands. The sailor then helps the "wife" undress down to a single article of clothing. She then gets out of the bed in her state of undress to ring a bell, and returns to the bed. The sailor then helps the "wife" get dressed.
After the three laps, the husband comes back and rings a bell. This stops the game.
Winners is either who has the most clothes redressed, or (in a tie) who has the shortest lap time. Phew.
Full show for a limited time here:
https://gofile.io/d/SI6pBb