How to tell the difference between a tourist and a native of San Jose

In the city of San Jose, Costa Rica's capital, everybody dresses up. I feel like a bum tourist in my my comfy little shorts-shirt-and-sandals get-up. Most people here wear long pants, even when it's super hot outside. The men wear slacks and button-up shirts. The women get glammed up with classy makeup, nice purses, and they almost ALMOST ALWAYS wear heels. They even wear heels in the rain, and it rains here almost every day. I'm in awe whenever I see these women stepping over puddles and up onto curbs in heels as if it were nothing.