London-based fashion collective Mainline:RUS/Fr.CA/DE pushes the boundaries of traditional dress codes with corporate-inspired ready-to-wear that blends playfulness and sensuality. Named after the country codes of its three cofounding creative directors, the brand celebrates cross-cultural storytelling in every collection. Committed to sustainability, pieces are crafted from upcycled and deadstock fabrics, transforming paneled sport jackets, patchwork knitwear, and Lycra shapewear with asymmetrical designs and functional concealed zips.