Silk Dupioni

Silk Dupioni is a plain-weave silk woven from reeled yarns that carry irregular slubs across the weft, the result of pairing threads from two cocoons that nested together. Those slubs are the signature of the cloth: raised, uneven horizontal flecks that catch light and read as texture rather than flaw. At roughly 90 to 130 g/m² (about 20 to 28 momme) it is a mid-weight silk with a crisp, papery hand and a subtle, dry sheen that shifts with the light.

The cloth holds structure. It stands away from the body, keeps a pressed pleat, and supports the sculpted shapes used in bridal and tailored jackets, which is why it fails at soft drape. It frays badly along cut edges, so finish every seam allowance, and it water-spots on contact, leaving rings that a full clean will not always lift. Press with a dry iron on a medium setting and test scrap first, since steam can flatten the slubs and mark the surface. Grain runs true, but the slubs make the weft direction obvious, so cut all pieces one way for consistent texture.

For sewing, use a size 70/10 or 80/12 sharp needle and fine thread, and shorten the stitch slightly to keep the crisp weave from puckering. The fabric holds needle marks, so pin inside seam allowances and avoid unpicking. French seams or bound edges control the fraying and read cleanly inside an unlined jacket. Interface collars and cuffs lightly; the cloth already carries body, and heavy fusing stiffens it past use. Common applications include structured dresses, evening jackets, bridal gowns, and drapery or cushions where the slub texture and sheen do the work.