Navy blue satin evening gown with beading

I lost my navy blue satin evening gown yesterday around 3pm after my sister's wedding reception near the Main Street crossing by the Yuma Civic Center. It's a size 6, Adrianna Papell, with a sheer back and delicate silver beadwork along the neckline and waist. The left hem has a tiny tear from stepping on a stray curb, and there's a small heart-shaped crystal on the zipper pull that makes it easy to spot. This dress means a lot to me - it was a gift from my grandmother and feels like a link to her every time I wear it. If anyone found it, I'd really appreciate getting it back.