Kate Moss graced Stella McCartney's fall 2025 show held on Wednesday ... the root structure of mushrooms. The material is called Mylo and was developed by Bolt Threads, a biomaterials company.

Californian start-up Bolt Threads recently teamed up with Adidas, Lululemon, and Stella McCartney to use Mylo, a leather made from mushroom roots. Despite these technological advancements ...