Harajuku is the name of a small section in Tokyo , it is around the JR Harajuku station .
There are many conservitive people in Japan , Harajuku is where the "different" type of youngsters gather.
And Yes, there are so many types it could make your head spin.
Here's a list of just a few, as Harajuku is the subculture mecca for Japan.
Gothic Lolita, (frilly dresses, cute girls)
Ganguro/Kogal/Gyaru, (white eye makeup/lipstick, California street walker style.)
Cosplay (dress up like your favorite character)
Visual kei (Freaky J-punk style. Think David Bowie from Labyrinth meets Marilyn Manson and then spawning.)
Decora/Kawaii (Lots of cute accessories, stickers, fluffies, toys... just raid your little sister's dress-up trunk)
There's also a type of guy that dresses up in flashy women's kimonos and try to look feminine.
There are so many different kinds, that basically you could come up with your own and parade around Harajuku and when people ask you what style you are, you tell them your own!
I think Harajuku is any style you weird kind of style you make it . Its all about expressing you self even if you have to color outside the box.
Nicki Minaj claims her self also as a Harajuku Barbie :