Is it okay to be overly proud if what you are proud of is rarely accepted.?

I am a pretty religious and I believe in dressing modest. In my school (and many others), dressing modest is not the hottest. I wear shorts as long as my knees and shirts that cover my breasts, shoulders, back, and stomach. When I hear people talk badly of my religion or how I dress, for some reason I never feel bad that people do that, I feel proud of who I am. I gives my pride if someone does that. Its like I won't take crap from people for just being myself. But what I do feel bad about is being overly proud. I don't think I am better that anyone. I always thought everyone is the same. But I just can't take crap from anyone, what do you think?