Sometimes you don't need a shirt, just some paint and a lot of creativity. (boobs might help as well)

These sexy girls were found cavorting at Casa Casuarina, AKA The Versace Mansion on South Beach's Ocean Drive wearing little more than acrylic paint for a top. Considering what the ravages of gravity can do to the human body over time, I would say that the paint holds up pretty well providing far more support than one would imagine.