Size 0 but fit is slightly small and no stretch. I’d say closer to a 00. New with Tags Designed with a formfitting silhouette and an ankle length. Side seam ruching flexes to fit every curve. Linen fabric has a subtle texture but is lined for a more comfortable feel. Measurements from size 0 Length: 53.5in from shoulder Fabric: Lightweight, non-stretch linen weave Fixed halter strap Floral print Ruching details Side slit Square neckline Hook-and-eye and hidden zip at side Shell: 100% linen Lined Lining: 100% cotton Dry clean Imported, China