Emo doesn't exist or at least... it's not as noticeable as you would think.
Emotive Hardcore Punk is rare. Probably more rare than goth or any other kind of punk. It's too bad it didn't get much of a chance to blossom into something it could have been.
REAL Emos don't have a uniform as such. In fact, from my understanding of it all, punks in general don't have a certain look, so how could you even know who's an emo and who isn't?
Maybe if you stopped wearing fishnet shirts and tight black skinny jeans with lots of eyeliner, people wouldn't call you emo.