Royal Blue Dress Prom sweet 16 size 6

Used prom dress or for sweet 16 Color is a bright royal Blue with rhinestone detail at neckline. Zips in back and then ties Very well lined with thee layes No label for size…guessing about a size 6 Measurements are as follows 49” from waist to floor Bust is 16” across Waist is 14” across Needs to be dry cleaned there are water marks or something on it. I took photos so please see.