thumb|Dupioni fabric. thumb|Dress in brown dupioni, 1940s/early 1950s Sweden. Dupioni (also referred to as douppioni, doupioni or dupion) is a plain weave silk fabric, produced using fine yarn in the warp and uneven yarn reeled from two or more entangled cocoons in the weft. This creates tightly woven yardage with a highly-lustrous surface and a crisp hand. It is similar to shantung, but slightly thicker, heavier, and with a greater slub (cross-sectional irregularity) count. In Japan a cocoon containing more than one silkworm is called .
thumb|Dupioni fabric. thumb|Dress in brown dupioni, 1940s/early 1950s Sweden. Dupioni (also referred to as douppioni, doupioni or dupion) is a plain weave silk fabric, produced using fine yarn in the warp and uneven yarn reeled from two or more entangled cocoons in the weft. This creates tightly woven yardage with a highly-lustrous surface and a crisp hand. It is similar to shantung, but slightly thicker, heavier, and with a greater slub (cross-sectional irregularity) count. In Japan a cocoon containing more than one silkworm is called .
Dupioni is often woven with differing colors of threads scattered through the warp and weft. This technique gives the fabric an iridescent effect, similar to but not as pronounced as shot silk taffeta. Dupioni can be woven into plaid and striped patterns; floral or other intrinsic, intricate designs are better suited for lighter-weight silks and/or those with smoother finishes, although dupioni may be embroidered in any manner desired.
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