Plaid corset & G-string lingerie set

Black, white, and red plaid lace up corset and matching G-string Plastic boning in the corset Pleated ribbon trim and a red bow at the front Sweetheart neckline The material has no stretch and the G-string is elastic except for the plaid front Labeled size medium but fits on the small side Flat lay measurements (laced completely closed in the back): Pit to pit - 14" Waist - 13" Length - 13.5" 90% polyester 10% spandex (I'm confused by this though because it isn't stretchy.) New with tag pictured