Beautiful floral dress

Gorgeous floral silky dress. Blue attached sash ties in back. Zipper in back. It says size 6 but I'm 5'2 115 lbs and it fits me perfect. I usually wear a dress size 2 so I would say it's closer to a 2. The following measurements are laying flat-12inches right under bust at sash area. 30 inches from v split in front top to bottom of dress. Polyester/spandex