With regard to your second comment, you just have to keep in mind that just because a finance or law firm is filled with highly paid professionals, it does not mean that they are sartorially inclined in the SF sense. It's just a "better safe than sorry" situation to wear black shoes. No one is going to hold it against an interviewee for going too conservative or for not flashing up-to-the-minute fashion sense. But they are going to hold it against someone who is viewed as overly flamboyant. AFTER you've been there and can get a sense of the style, it MIGHT be ok to loosen up a little. But probably safer to save that for after you have the job. As for younger management teams such as your gaming company that might be much more casual, you should try to find out in advance what they wear, and then dress just a little bit more formal, unless you are TOLD DIRECTLY by them what to wear. For instance, if they wear jeans and t-shirts, I might suggest khakis and a button down shirt. If they wear khakis, bring a nice blazer. Just show some respect for the interview process without standing out too much. Everyone knows you are an interviewee, so even if you stand out for being a little overdressed, at the least they won't hold it against you, and at best they'll appreciate that you made the effort. I also agree with what JubeiSpiegel and ElDave have to say.