Proenza Schouler Jocelyn Dress in Midweight Viscose Rib Knit. The Jocelyn Dress in Midweight Viscose Rib features a slim A-line silhouette with a crew neckline, buttoned lower back band and removable sleeve ends. Designed for transitional weather, this style includes a button at the center back neck used to attach a tonal tube scarf for a high neck finish.