The renowned model moved from virtually naked to a complete dress during the SS23 fashion presentation in France.
Coperni walked a practically naked model to the runway and sprayed a garment on her before she walked.
The model was Bella Hadid and the outfit was constructed of Fabrican, a spray-on substance that hardens.
Attendees watched as experts sprayed fabric over Hadid in the shape of a dress, and after some careful adjustment, she went down the runway.
Fabrican is a spray-on liquid consisting of cotton or synthetic fibres that can be removed and reused, Vogue Business said.
Manel Torres, a designer and physicist, co-founded Fabrican alongside Coperni co-founders Sébastien Meyer and Arnaud Vaillant.