Few memories left, saw this some 30 years ago. Giovanna (Monica Vitti) and Franco (Jean Sorel) are swindlers/lovers who pretend to be siblings and go around stealing from the rich and the elegant in luxurious European hotels and yachts. One day, they meet Cristiana (Daniela Surina), a beautiful girl who tells them she's being threatened by her brother Sergio (Roberto Bisacco), as he wants to be the sole heir to their family fortune. From then on, many twists follow, but they're much less interesting than gorgeous Vitti+Sorel's top fashion 1960s Italian clothes and cars...The film follows that popular 1960s trend of chic comedies with convoluted plots involving double-crossing swindlers, robbery, high-class jet-set, beautiful stars and eye- popping international locations ("The Pink Panther", "L'Homme de Rio", etc). Though I can't remember one single line of dialog, I still recall it being A-class in charm, costumes and production design. And with beautiful, sexy, funny Vitti around, it's certainly worth a look (if you can find it) on a lazy afternoon, sipping a Kir Royal.
