Navy blue Calvin Klein gown with crystal belt

I lost my navy blue Calvin Klein evening gown, size M, yesterday around 3pm after an event downtown. It's a floor-length gown with a satin-velvet finish and a detachable crystal-embellished belt. I think I had it outside the Starbucks on Abercorn Street near Forsyth Park in Savannah. The gown has sentimental value—it's a gift from my grandmother and I really hope to get it back. If anyone found it, please reach out; I’d be incredibly grateful to be reunited with it.