Grunge is mainly to me about throwing on whatever you think works in a messy but also fashionable way.
Throwing on ragged jeans and leather also seems to depict the grunge era.
Marc Jocobs had a grunge collection in 1993 but was fired briefly from his job for it.
There isn’t much to talk about with grunge because of it’s individuality in outfits from anything in the same catagory. The basic idea with grunge fashion is to throw it on and make it work even if it’s been on your bedrrom floor for a week or is ripped all over. Casual uncaring fashion.