Stella McCartney took Paris Fashion Week beneath the surface on Wednesday, 30 September 2026, transforming her Spring/Summer 2027 runway into an underwater world of vivid colour, fluid movement and pointed environmental messaging.
Set in the gardens of the British ambassador's residence in Paris, the show was as much a statement of intent as a fashion spectacle. Ocean-inspired motifs and flowing silhouettes carried McCartney's message about animal welfare and overfishing, while her longstanding push for animal-free fashion remained at the heart of the collection.
And there was one notable omission from the runway: wool. Instead, McCartney spotlighted alternative materials as she continued her search for more animal-conscious ways to make luxury fashion.
'Sea Life, Not Seafood'
The show's message was impossible to miss. McCartney framed the collection around the phrase 'sea life, not seafood', encouraging audiences to see marine creatures as more than something that ends up on a plate.
The idea played on a striking contradiction: we can spend hours watching documentaries celebrating the beauty and intelligence of ocean wildlife, only to encounter those same creatures as food. For McCartney, that disconnect became a starting point for a wider conversation about how humans treat the natural world.
The runway itself looked as though it had been pulled straight from beneath the waves. Dolphins, sharks and killer whales appeared across the collection, while transparent handbags contained tiny sea creatures, including starfish. Shades of aqua, vivid blue, and coral swept through the looks, giving the show an unmistakably aquatic feel.
But beneath the playful imagery was a more serious environmental message. McCartney used the collection to spotlight issues including overfishing and climate change, while making the case that fashion can help shift perceptions of the natural world. Her argument extended beyond what people eat, pointing towards the wider environmental consequences of commercial fishing and the choices made by industries that depend on the planet's resources.
From Ocean Waves To Wool Alternatives
The environmental message went beyond the sea.
McCartney was also proud to present a collection completely free of wool, instead turning to alternatives such as Brewed Protein, a fermented material developed by Japanese biotechnology company Spiber. The designer had previously used the innovative material in her work, but its return for this collection further underlined her push towards animal-free alternatives in luxury fashion.
McCartney also addressed the complicated question of animal welfare in wool production, describing it as 'a tricky one'.
McCartney told The Guardian, that she has 'alpacas at home, and have to shear them. If you can shear a sheep in a kind, humane way, then I don't, personally, think that's the end of the world,' she said. McCartney added that in situations where wool does feature in her collections, it is responsibly sourced, but did not deny that wool production nowadays is done irresponsibly.
For her, 'it's about how kind you are' but that kindness requires real work, at the end of the day.
For McCartney, the point is not simply to remove animal-derived materials from fashion, but to challenge the industry to prove that its supply chains can meet higher standards of animal welfare and environmental responsibility.
Luxury fashion, her collection suggests, does not necessarily have to rely on conventional animal-derived materials.
Hokusai Waves And Hollywood Glamour
Despite the serious message, this was still a fashion show — and McCartney delivered plenty of spectacle.
The collection featured low-rise trousers, fluid tailoring, sheer layers and exaggerated bubble hems. Some evening dresses echoed the movement of Japanese artist Hokusai's famous wave imagery, while long-sleeved swimsuits were styled as sophisticated eveningwear.
The front row brought its own dose of star power, with Jennifer Lopez and Juliette Binoche among the guests. Miranda Kerr also appeared on the catwalk, adding further glamour to a presentation that deliberately balanced celebrity fashion with environmental campaigning.
The show's invitation came with a video message from oceanographer Sylvia Earle, while the presentation also featured a voiceover from broadcaster David Attenborough.
For McCartney, however, the clothes remained part of a bigger conversation. After decades of championing animal-free and lower-impact fashion, her latest Paris collection once again put environmental concerns directly on the runway — this time with the ocean firmly in the spotlight.
