It's hard to define what is punk and what isn't. The whole idea behind punk culture supersedes labels and boundaries of all kinds. There aren't any rules set in stone, and if there were, those we consider 'punks' would smash those rocks with gleeful abandon. Here are some examples of different styles adopted by those lovable fans of punk music.
Today everyone knows what punk fashion is, but in 1970 it didn't exist. Punk first emerged in the mid 1970s in London as an anarchic and aggressive movement. About 200 young people defined themselves as an anti-fashion urban youth street culture. Closely aligned was a music movement that took the name punk.