If you accept a game of Truth-or-Dare, the Daredroid dress rewards you by mixing up a White Russian. It's just one of the reactive, responsive pieces of couture from Anouk Wipprecht, whose dresses also go from solid to translucent.
A dress that gradually disappears as you get a magic ball near to it? Yaishplease. That's exactly what Daan Roosegaarde, V2 Lab, and Maartje Dijkstra have created, using a flexible plastic material and radio frequency technology. Very pretty too: