It depends very much on where you are interviewing. At one company I was at, it would be nice if you had a shirt on, and something longer than shorts when visit

It depends very much on where you are interviewing. At one company I was at, it would be nice if you had a shirt on, and something longer than shorts when visitors were expected. Before I visited another company, my host suggested that I also have dress socks on, rather than my normal wool socks.