Mother of the bride dress

I bought this for my last daughters wedding.. it’s a Mori Lee.. it’s a darker grey. It’s says it’s a size 8 but mori lee runs extremely small because I am a size 2 in all my other dresses.. I bought the belt and had them sew it to the dress and it’s on there really good. I had them hem it up so it’s just above my knees and had have them shorten the straps..I am 5’3” 120lbs with a 34b bust