Anthropologie Donna Morgan collection size 6 floral bridesmaids dress

A bridesmaids dress purchased at Anthropologie and used once. Base color is off white/greyish white with light purple and golden flowers. Tag says it's size 4 but definitely more of a size 6. Material is shiffon like and flowy. Has been worn once, dry cleaned and stored in a garment bag. Lay flat measurements from shoulder to waist 16" and the waist 14,5". Waist has no stretch but the zipper goes pretty far down. Top part falls to natural waist. Also has a belt of the same fabric. Not see through.