(TrendHunter.com) Stella McCartney is partnering with H&M to launch a more accessible, sustainability-focused collection. The range will be available in May and brings elements of her luxury designs to a broader…(TrendHunter.com) Stella McCartney is partnering with H&M to launch a more accessible, sustainability-focused collection. The range will be available in May and brings elements of her luxury designs to a broader…