White duvet cover with navy trim

I lost my white king-size duvet cover with navy piping and a tiny embroidered star near the bottom corner. It's from the EverNest brand, about three years old, and there's a faint coffee stain along the inside seam. I last saw it yesterday around 3pm near the Starbucks on Douglas Ave in Wichita's Delano district; I remember folding it back into the bag with the matching pillowcases and leaving it on the seat outside. It has sentimental value—it was a gift from my sister, and I really hope to get it back.