Carine Smocked Camisole (Similar to Reformation)

Similar to Reformation Carine Smocked Camisole (Not Reformation!!!) Not sure of brand. Has working zipper through back and adjustable straps Not sure of material, but feels like poly? Item is branded as size large but fits like small Measurements (approx, lying flat) 15.5” underarm to underarm 13” at top of smocking, unstretched. When stretched, 16” 13” at bottom/hips unstretched, 18” when stretched