Pink silk Mother of the Bride/Groom 2 piece dress; size 14 but fits like a 12

Pink silk Mother of the Bride/Groom dress; 2 piece; top has back zipper & skirt is A line & has a left side zipper; tag says size 14 but I wear a size 12 & it fits me; worn once; dry cleaned; never altered; would be gorgeous made into a sheath skirt; have shoes to match