King Charles attended London Fashion Week to formally appoint Stella McCartney as an Ambassador of the Sustainable Markets Initiative, as she unveiled a curated installation spotlighting next-generation sustainable material innovators.
King Charles stepped into London Fashion Week today to formally recognize designer Stella McCartney as an Ambassador of the Sustainable Markets Initiative, the private-sector coalition he founded in 2020 when he was Prince of Wales. The moment unfolded as part of a curated installation hosted by the British Fashion Council, where McCartney spotlighted a new guard of British material innovators working to reengineer fashion’s footprint.
London Fashion Week opened only hours after King Charles’ brother, the former Prince Andrew, now Andrew Mountbatten-Windsor, was arrested on suspicion of misconduct in public office, an investigation sparked by newly released documents suggesting he may have shared confidential information with the late convicted sex trafficker Jeffrey Epstein.
According to the Sustainable Markets Initiative, the King presented McCartney with a sustainably sourced Mongolian cashmere scarf created by Erdos and embroidered with the Terra Carta seal, the charter he launched to put sustainability at the center of global value creation. The appearance marked a rare and pointed show of support from the monarch at the opening of London Fashion Week, underscoring fashion’s growing role in climate diplomacy and industrial transition.
In a statement released by the organization, McCartney said: “The Sustainable Markets Initiative is an organisation I have proudly supported since its inception in 2020, and I am so grateful to His Majesty for this recognition. For me, the most important thing about the SMI is that its focus goes beyond discussion to driving action. I am deeply honoured to become an Ambassador.”
Jennifer Jordan-Saifi, CEO of the Sustainable Markets Initiative, added: “We are proud to welcome Stella McCartney as an official Sustainable Markets Initiative Ambassador as we continue to accelerate the private sector shift toward circular and responsible fashion. As a pioneer in sustainable fashion, her expertise and unwavering commitment will help drive meaningful progress across the sector. Stella’s leadership is deeply aligned with the Sustainable Markets Initiative’s Fashion Task Force, chaired by Federico Marchetti, which, together with the Circular Bioeconomy Alliance, promotes regenerative practices and supply chain transparency through digital passports.
Together we are joining forces to put Nature, People and Planet at the heart of global value creation.”
A material-focused installation at the start of Fashion Week
The exhibition, curated by McCartney, assembled faux feathers by FEVVERS, along with Sequinova, Radiant Matter, and Yatay, each representing a different frontier of next-generation design. The plant-based feather alternatives sat alongside mycelium-derived leather substitutes and biobased sequins engineered to reduce plastic content.
The United Nations Environment Programme estimates that fashion produces more than 100 billion garments annually and accounts for roughly 10 percent of global carbon emissions and 20 percent of global wastewater. The sector is also responsible for significant plastic waste, according to UNEP reporting. The Sustainable Markets Initiative positions itself as what it calls the private sector’s “go-to” CEO platform for accelerating a circular transition, connecting executives across finance, retail, agriculture, and design.
McCartney has been part of the SMI Fashion Task Force since its launch in 2020. Beyond her label’s longstanding refusal to use leather, fur, feathers, or exotic skins, she co-founded the SOS Fund, which directs early-stage capital toward emerging material technologies intended to decarbonize fashion. Her installation will travel to the SMI 2026 Roundtables and Exhibition at Hampton Court Palace this March, extending the Fashion Week conversation into a broader economic forum.
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