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But plastrons have proved highly unstable under water, keeping surfaces dry for only a matter of hours in the lab.

Leopard and landscapes of coconut trees patterns appeared on short sleeve shirts while big necklace plastrons acted as clothes.

Ms. Repossi works exclusively with precious metals and stones while Mapplethorpe’s necklaces and plastrons were made of beads and what she described as “cheap, strange objects.”

The cotton poplin plastron shirt took 11 hours to make, according to the French house.

The show opened with all-wite looks featuring quilted cotton fencing plastrons and long, romantic tulle skirts.