What is satin gazar - the fabric used in Princess Katherine's wedding dress?

Answer 1

Gazar (also gazaar) is a silk or woolplain weave fabricmade with high-twist double yarns woven as one. Gazar has a crisp hand and a smooth texture.[

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Silk gazar is much used in bridal and evening fashion due to its ability to hold its shape. Gazar was developed by the Swiss textile firm Alexander in collaboration with Basque couturier Cristóbal Balenciaga, who featured silk gazar in his collections of 1960–68.[

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Balenciaga's mastery of this gleaming, lighweight fabric with its "claylike" ability to hold its shape was exemplified by the trapezoid wedding gowns in his collections of 1967 and 1968.[

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from Wikipedia