Open back sheath dress

Open back gold-threaded sheath dress. Long sleeves, open back that ties at the neck. Elastic waist band stretches to 17”. Length of dress = 30”, open back measures 12” long tapering from the waist from 3” to 8” (see pic). Arm to arm = 16”. The tag says Gold for the threading, but I would say it’s more coppery than gold!