Still, he was perhaps best known as a designer whose styles combined the discipline of fashion with technology and art. His animating idea was that clothes should be made from one piece of fabric, and he pursued designs — such as his famous pleats — that incorporated new techniques and fabrics to accomplish that ambition.
There was no immediate information detailing Mr. Miyake’s survivors. A famously private person, the designer was known for his close relationships with his longtime co-workers and collaborators, whom he credited with being essential to his success. He was most closely associated with Midori Kitamura, who started as a fit model in his studio, worked with him for nearly 50 years and now serves as president of his design studio.
Throughout his life, “he never once stepped back from his love, the process of making things,” Mr. Miyake’s office said in a statement.
“I am most interested in people and the human form,” Mr. Miyake told The Times in 2014. “Clothing is the closest thing to all humans.”
Hikari Hida contributed reporting from Tokyo.