What type of Fabric is used to make Japanese Kimonos?
Those are furisode. A proper furisode is most certainly NOT made of cotton, which is extremely informal. Furisode are among the most formal type of kimono and are only made of silk. Sometimes I see solid-colored, washable furisode made of polyester, but those are rare. Generally speaking, if you want to make an authentic kimono, you want to buy a bolt of actual kimono fabric and make your kimono from that. Most kimono are made of silk. Some are made of other fabrics, like polyester (very modern) or wool. Only yukata are made of cotton. Fabrics like satin or brocade are never used.