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All answers having "Dress material" as clue:

4 Character Answers:

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LACE

LAME



5 Character Answers:

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CREPE

NINON

NYLON

ORLON

PIQUE

RAYON

SATIN

TULLE

VOILE



6 Character Answers:

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POPLIN



7 Character Answers:

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ETAMINE

ORGANDY

ORGANZA



11 Character Answers:

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DOTTEDSWISS