In the first AP Podcast with Pete Wentz, he talks about something he just found out about: these kids who get clothing 6 or 8 months prior and wear them to school to convince other kids at school that what they're wearing is the cool thing to wear. Its like a street team & he called them tastemakers or culture arbitrators.

Does this group of people have a name? How can I get into it?

Thanks if you can help!