In a suite at the Standard hotel in London, celebrity stylist Law Roach is giving me the inside track on one of his most viral looks. In February, client and friend Zendaya appeared at the premier of Dune: Part Two in a vintage Thierry Mugler robot outfit made from chrome and Plexiglas panels.

In an excerpt from his first book, “How to Build a Fashion Icon,” the image architect describes meeting the young client who would alter the course of his career.

Style Points is a weekly column about how fashion intersects with the wider world.