A really nice/ "in" hairstyle today would be the super straight, and about shoulder length skater look. With your hair parted so most of it covers a half of your face. Giving you and emo, but punk look.
well,to be a nice girl you can either be: causal(just jeans and a random shirt.) ,kind looking(as in just wearing shorts and a tank.)any other type of clothing saying 'im a friendly,outgoing...
1. maybe 2. Of course you can be nice to girls! Maybe not to particular individuals, but to girls in general, definitely. (And if you are a guy, I would actively encourage it, it makes your life so...