Fashion sense.. I wear whatever fits in a way I like. I prefer loose-ish blue jeans and dark colored shirts/sweaters, most often gray and blue, sometimes a dark red or dingy white. Not really any things with icons or stuff on them.
When I was a kid I had a bunch of eclectic, nerdy shirts, chosen for awesomeness, and I'd wear any random thing I found in the morning. I still do that, only my wardrobe's been worn down mostly to the things above. A few days a week I have to wear slacks and shirts to school, same pattern. I recently took to bunching my socks up at the laundromat so I don't wear pairs that don't match.
Other grooming stuff. I am often too lazy to shower on school days, getting up early sucks enough already. I keep my hair short; at most I will tug at it in the morning to get rid of bedhead. I do like to be clean-shaven. I don't wear adornment.
Comparison to people around me: I somehow generally fail to notice people's fashion. It doesn't cross my mind to note it, unless someone else calls my attention to it. Also, someone recently pointed out that my clothing, while apparently normative, does not make me stand out any less. (Probably subjective, though.)