IRO Paris telana drapey dress size 40

IRO telana drapey dress size 40. Size chart on IRO site says 40= us 8 But please use measurements it looks smaller especially through the hips. Approx measurements flat between underarms 18” length 27”. Side ruching and zipper. Color is black with red and tan. Sheer layers so a little see through. Pre-owned in very good condition smoke free home. Stock photo has slightly different color then my dress but the fitting is the same