I'm not denying what Gwen Stefani did wasn't creepy or appropriative, because it was, but she didn't make up the name Harajuku. Harajuku is an area of Tokyo where lots of different kinds of young people hang out in various different subcultures with their own kinds of street fashion. The one she ripped off wasn't really Visual Kei, though I'm not sure off the top of my head which subculture in particular she ripped off, or if she just took bits of what she liked from several of them.