According to your info, you're 25. I'm going to assume that you've been to at least one themed party in your life. I'm confident you can figure it out.
nothing stands out like neon from the 80s, disco from the 70s, or hippies from the 60s. what do u dress up as grunge? wear plaid or polo shirts? I'm just saying, the novelty factor didn't stand out, so i was just curious.