Can I wear the same size for all your clothes?

Yes: Our clothing sizes are designed to be consistent with one another—basically, an M-sized sweater is the same as an M-sized shirt, an M-sized hoodie, and so on. Worst-case scenario, exchanges are free :)

But that’s not necessarily true: you don’t necessarily wear the same size on top as you do on the bottom—just because you wear size M T-shirts doesn’t mean you’ll wear a size M swimsuit. As a guide, it’s best to go by the pants size you usually wear.