"San Francisco, California: Wearing a suit as business attire.

"Wearing a suit as business attire, even to job interviews, communicates that either 1. You are not from here or 2. You are selling something. Most tech employees, including many execs, wear anything ranging from business casual (khakis and a button-down shirt) to sandals and jeans, or even shorts, for day-to-day office activity.""