Calvin Klein navy satin evening gown, size M

I lost my Calvin Klein navy satin evening gown yesterday around 3pm near the Palace Theatre on Clinton Ave in Albany. It's a full-length gown, size M, with delicate silver beading along the neckline and a detachable slim belt. The hem has a tiny snag and the inner label reads 'Calvin Klein, Size M'—otherwise it's in great shape. This dress is sentimental because it was for my sister's wedding, and I really need it back.