Proenza Schouler Demi Blouse in Bone - White. Size 6 (also in 0, 2, 4). 50% viscose 42% silk 8% spandex. Made in China. Dry clean only. Front button closure. Buttoned cuffs. PROE-WS170. R2444000. About the designer: Proenza Schouler is a New York based womenswear and accessories brand founded in 2002 by designers Jack McCollough and Lazaro Hernandez. The label defines itself through a fusion of craftsmanship, attention to detail, and a sense of refined ease. Drawing inspiration from contemporary art and youth culture, the designers place an emphasis on precise tailoring and the use of custom developed fabrics.