Fad-Whore
A brain-dead person who thinks they're awesome just because they wear the same clothes as everyone else. They don't think. They just follow.
I started wearing cargo pants because everyone else did. Now I look like a military guy.
I joined a club just because it was 'popular.' I don't even like the club.
I bought a phone case because it was 'viral.' It's just a picture of a dog.