Navy blue satin evening gown with crystal neckline

I lost my navy blue satin evening gown yesterday around 3pm near the Kansas State Capitol on 10th Ave in downtown Topeka. It's a floor-length Adrianna Papell gown in size 6, with a crystal-embellished neckline and a delicate silver zipper pull at the back. The gown is in good condition overall, but there’s a tiny snag on the hem and a faint wine stain along the bottom edge from last weekend’s dinner. It has sentimental value—my cousin’s wedding is coming up, and I really need it back to wear for the ceremony.