I was bullied for all sorts of reasons, and for none at all as a child, teen, and even as an adult, but to a lesser extent as an adult. As for clothes, I have never been a slave to fashion. I wear whatever I like. I just don't like fancy clothes. I prefer relaxed, comfy clothes. If that bothers other people, tough. It's my bod, and my money paying for the duds, so I get to wear what I want.
I have a bigger problem with make-up. I don't like painting my face, so I never buy it and never wear any. This has kept me from getting some jobs, but I just can't stand the concept of painting my face, and also don't want the feeling of stuff coating my face, so I just wash my face, and go about without any war paint on. Can't work anymore anyway, due to health issues, so it's no longer a work issue. If someone doesn't like how I look with a naked face, then don't look at me. With my Aspergers, I'm already not looking at you.
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If a man does not keep pace with his companions, perhaps it is because he hears a different drummer.
Let him step to the music which he hears, however measured, or far away.--Henry David Thoreau