Apparel Shibori
Shibori is a Japanese dyeing technique that typically involves folding, twisting or bunching cloth and binding it, then dyeing it in indigo. Whatever is used to bind the fabric will resist the dye, resulting in areas of the cloth that take the distinctive blue dye in patterns created by the resistance, and other areas of the cloth that remain white. Shibori is a very vast technique and there are tons of ways to do it (and a truly infinite number of patterns you can create).