Dupioni Silk in Practice: From Greige Slub to Exquisite Garments - Fan Bingbing's Story

Step 1: raw silk, reeled and wound

Every dupioni starts as raw silk. In Yizhou, Guangxi, mulberry cocoons are reeled into 20/22 denier filature silk, graded 4A to 6A under GB/T 1797-2008¹, and wound into hanks. This is the same raw silk we supply to weaving mills, and it is the base yarn a dupioni loom feeds on. The quality at this stage sets the ceiling for everything after it. The weights and grades cited here follow the same spec sheet we give buyers, so the numbers match what a mill will quote.

Related: raw silk yarn for weaving

Step 2: the double-cocoon weave that makes the slub

Dupioni is a plain-weave mulberry silk woven from paired-cocoon filaments. Because the two filaments refuse to separate cleanly, the yarn carries thick-and-thin slubs along its length. Woven plain, those slubs become the fabric's signature: a fine irregular rib that reflects light unevenly. The texture is part of the weave, which is why it reads as deliberate and why no two lengths look exactly the same.

Step 3: the weights, widths and shrinkage to specify

We supply dupioni greige straight off the loom, or dyed to order from a standard shade card or your custom color, so you get the exact shade you need. Momme is a silk weight unit; one momme equals about 3.75 grams per square meter. Slub is the irregular thick-and-thin texture woven into the cloth. Standard dupioni weights are 19, 23, 30 and 40 momme in 90, 114 and 140 cm widths. The 19 momme dupioni is the entry weight for gowns: light enough to move, heavy enough to hold a silhouette. Because the slub is part of the weave, allow about 5% shrinkage in the cutting block, the hand-wash shrinkage standard for dupioni².

Related: dupioni silk greige

Step 4: the cloth on a body, in 2013

In 2013 the Christopher Bu atelier cut two dupioni pieces for the actress Fan Bingbing. The first was a stamp-printed umbrella skirt, photographed in Paris with the Eiffel Tower behind her³. The second was a spring/summer 2013 plaid ensemble, worn to the Skiptrace press conference in Cannes³. Look at how the print sits on the slub, and how the skirts hold their shape. For example, a 19 momme dupioni skirt holds its A-line instead of collapsing, because the slubbed weave resists the drape that flattens a crepe. Both garments appear again on the label's own lookbook models, which confirms them as Christopher Bu product cut from the same dupioni we supply as greige today.

Frequently asked questions

The questions buyers ask most often about dupioni, answered directly.

What makes dupioni different from other silk?

The slub. Two silkworms spin one cocoon and their filaments tangle, leaving thick-and-thin slubs in the yarn. Woven plain, those slubs give the cloth a visible, irregular texture that flat crepe cannot match.

What weights and widths do you supply dupioni in?

We supply dupioni in 19, 23, 30 and 40 momme, in 90, 114 and 140 cm widths — greige or dyed to order. The 19 momme weight is the standard for gowns.

Do I need to allow for shrinkage?

Yes. Allow about 5% shrinkage in the cutting block, because the slub is part of the weave. A cutter builds the allowance into the block before cutting.

What did Fan Bingbing wear in dupioni?

Two Christopher Bu pieces in 2013: a stamp-printed umbrella skirt photographed in Paris, and a spring/summer 2013 plaid ensemble worn to the Skiptrace press conference in Cannes.

Conclusion

Dupioni is the clearest example of how a silk's texture comes from its yarn, not its finish. Two silkworms, one cocoon, and the slubs that result are what give the cloth its structure and its play of light. For a buyer, the lesson is simple: specify the weight, the width, and the grade up front, and confirm the slub character on a swatch before you commit to meters.

Related: dupioni silk greige · request a swatch

Specifying your order

Specify the weight, the width, and the quantity you need. Order the swatch first — mini swatches are supplied free of material charge once availability is confirmed — and confirm the slub character and hand before you commit to meters. Full specs and MOQ are on the dupioni silk product page. Read about us for the company behind the supply, or contact the B2B team directly.

Related: request a swatch · check MOQ and trade terms · about us · contact the B2B team