This is actually my biggest problem. Not to sound vain, but I am a pretty decent lookin' dude and have even been asked to model before (which I didn't do because of my anxiety). I am sort of metrosexual when it comes to fashion and everything, so I dress well and usually have some sort of hair style going on. I guess I'm best described as being preppy.
But I'm really shy around people, so I think people assume I'm a snob. It sounds cruel, but I think the stereotype of the socially awkward person is usually one of the geeky or nerdy type who is unattractive and living in their own world. So when people see me and I "look" normal, but I don't casually start chatting them up or whatever, they just think, Oh, he's a douchebag.
I remember in high school this girl liked me and had her best friend tell me to talk to her, but I was too embarrassed to do it. One day i was walking down the hall and her best friend passed by me with a group of other girls and said (loud enough that i could hear it): "DOUCHEBAG!" They just assumed I ignored this girl because I was a prick, but the truth is that I was suffering from SA.
I was told by a girl last year (who's now a friend of mine, who knows I'm really quiet) that I probably actually intimidate some girls by being the way I am, and make them afraid to approach me. She said when she first met me she thought I was a jerk, too, just because I was so quiet and it took a while for her to realize it was just my personality.
I hate giving off vibes like that, but...I don't really have any control over it.