Saks Fifth Avenue Vintage Disco Era white stretch polyester button down shirt

Vintage Disco era Saks Fifth Avenue button down shirt, marketed to men. Slightly shiny white stretch 100% polyester fabric. Clubwear. Brand: Saks Fifth Avenue Color: off-white Size: Mens M but seems smaller (model is women’s size 2-4) Shoulder: 16” Chest: 19.5” Length: 27.5” Sleeve: 20”