Royal Collections materials garment cotton print dress Fleecemaking fibers data record identification of lace children indigenous peoples ICOM lace arsenic public conservation 20th century St Gallen policy cotton prints silk Soviet Epoch Coolmax policies collar reconstruction Heavily altered items embroidery stitches paper purse patterns macramé display case Theater costume labels false weave protest dress Twitter traditional costume wool receipts lining Guidelines sailor suit Queen Mary of Hungary Olympic Games sash Zuzu selection criteria Padding leather fabric Chile Social allergens documentation personal attitudes copy preventive conservation poison