Born in the city of Saitama, Japan, Tsumori Chisato studied fashion at the prestigious Bunka Fashion School in Tokyo. In 1977, she entered the Issey Miyake design company as the head designer for “Issey Sports" later renamed "I.S. Chisato Tsumori Design". ”. With this solid apprenticeship under her belt and at the encouragement of Mr. Miyake himself, Tsumori Chisato started her own line in 1990.