Missing Fashionista

From: Detective
Description: No connection was found between those who had disappeared. No one asked for a ransom. On the contrary, rather expensive things were abandoned at the crime scenes.\n I remember a woman’s hat among the evidence. Have you come across such a hat here?
Completed: It’s the latest New York fashion: no woman would refuse such a hat. Its owner disappeared though. Next to the designer’s label, I found a strange symbol.