I would like to add that if you are REALLY under-dressed, but REALLY don’t give a shit, this will work to your advantage as well. I have experienced it several times: At a nice club in Vegas with some shitty T-shirt on (longer story, and took some convincing of the bouncers to get in), or at a wedding with a white suit somebody had accidentally poured a glass of wine over. The fact you don’t care makes people think “Hey, this guy really must have something going on for himself…†Just one example of turning a disadvantage into an advantage.