Beautiful gown, size 10 new with tags

A-line scoop illusion floor-length chiffon lace mother of the bride dress with beading sequins, 3/4 sleeves. Slate blue. Tags say SZ 12 but a bit small more like a size 10. I am 5’8” and length is great. Never worn still has tags. https://www.jjshouse.com/a-line-scoop-illusion-floor-length-chiffon-lace-mother-of-the-bride-dress-with-beading-sequins-cascading-ruffles-008217326-g217326