Demetrios Vintage Altered Open-back unclassified dresses

Demetrios ivory, dupioni silk dress with exquisite beading and additional 2 pieces. Bodice is lace applique with beadwork on top with crystal-dotted sheer neckline, sleeves, and back. Keyhole opening in back with hook-and-eye closure. Sheath is silk with repeated applique at bottom and more beading. Zipper closure up to waist. Some beading missing from the very bottom.