Emo is the newly developed fashion, regarding hair styles all the way with fashion with it's own attitude. Not willing to follow the "dress code" of others emo has developed its own way of fashion.
Emo is nowadays a completely new fashion! Newly developed, recently popular but totally inspired from the 80s. Emo haircuts are very popular, as well as other emo fashion and the actual way of living; that is that you don't care about the dress code or about anything others have to say that would contradict your the current way you have adopted. For example, you wouldn't allow someone to criticise your emo haircuts!