Silver satin gown with sequined bodice, Online ordered, no size listed - a 4-6?

Silver satin gown with sequined bodice Ordered through Amazon, no U.S. size listed, likely a 4-6 Measurements lying flat: armpit to armpit:13", neckline to waistband:11.5", waistband:3", bottom of waistband to hem: 46" Modest gown features back zip, sleeveless, flattering waistband, a built in bra. Is fully lined, fabric feels like satin Perfect for a holiday party, prom, pageant, wedding, etc. Worn once for a family photo, from a non-smoking, pet free home