Ball gown in light griege silk organza machine embroidered in white and yellow centered irises and stems; full-length; wide round neckline front, shallow V back; cap sleeves; slightly dropped fitted waistline; full bell-shaped skirt, left panel overlapping right; wide lemon-yellow silk taffeta sash tacked and draping to waistline, finishing in butterfly-looped bow hooking asymmetrically left-back with hem-length streamers; heavily stiffened crinoline, boned full-length silk slip. Label: Hattie Carnegie / custom made. Made for and worn by Mary French Rockefeller (Mrs. Laurance S. Rockefeller.)