Black velvet evening gown with pearl neckline, size 6

I lost my black velvet evening gown yesterday around 5pm near the Fort Smith Convention Center on Garrison Ave. It's a floor-length satin-velvet gown, size 6, by Calvin Klein, with a pearl-embellished neckline and a slim back zipper. The gown is in great condition aside from a small wine stain on the inner lining and a tiny snag on the hem from last weekend’s event. It was a gift from my mom and means a lot to me, since I’m attending a gala this Saturday and really need it back. If anyone found it, I’d be grateful to arrange a pickup at my apartment on 19th Street or meet near the Fort Smith Public Library on Rogers Ave.