Sample Wedding Sales Letter Help, My Lace Wedding Dress Is Terribly Stained!?

Help, my lace wedding dress is terribly stained!? - sample wedding sales letter

I bought a Monique Lhuillier gown at a sample sale and was in the closet for the last 5 months ... I checked last night and the underside of the gray dress, and suddenly it's dirty. What was stored in a plastic bag for the wedding, they gave me and I realize I had to wash day, I took home.
I get these stains out BeABLE or dress is ruined!