Emerald green floor-length gown with beaded belt

I lost my emerald green floor-length gown yesterday around 3pm after the charity gala at the Fox River Mall in Appleton, in the Appleton-Oshkosh-FDL area. It's a David's Bridal strapless gown, size 6, with a sweetheart neckline and a detachable gold beaded belt that knots at the back. The fabric is satin with a subtle shimmer under mall lighting, and there’s a tiny snag along the left hem about an inch plus a faint coffee stain on the inside lining from the reception. This dress means a lot to me—it's tied to a family milestone and I’d really appreciate getting it back; if someone found it, I’d be grateful to arrange a pickup.