PARIS (AP) — Inside the Centre Pompidou, Helen Mirren opened Stella McCartney ’s Paris Fashion Week show with a spoken rendition of The Beatles ’ “Come Together.” Less performance than manifesto, it set the tone for a Tuesday night collection framed around humanity, animals and Mother Earth.

McCartney has long been ahead of the curve in fashion’s sustainability push. This season she claimed her most conscious offering yet: 98% sustainable, 100% cruelty-free. No leather, no fur, no feathers, no exotic skins. Instead came world-first innovations: FEVVERS, a plant-based alternative to feathers, and PURE.TECH, a programmable fabric that absorbs pollutants from the air.

If the message was serious, the mood was not. A pounding bass line and rave-like lights kept energy high as Robin Wri

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