Vintage Mike Benet formals white gown

Vintage Mike Benet formals white gown. Potentially a wedding dress, could also be a prom, cotillion, or formal dress. Has a couple of rust spots on inside where the previous owner had attached inside skirt with a safety pin and where the hook closure is on back. There are a few small pin sized holes on front. Some yellowing at bottom of dress and near sleeves, but dress is in fairly good condition. It has clear and silver beading around the bodice and netting on inside of dress. Flat measurements: PTP: 16.5" Waist: 13.5" Length: 54"