The hipstream is the flow of fashion, the zeigiest, the trendiest trend. It is the state of being in the flow of fashion's cutting edge.
Dude, is that an iPhone? You really are in the hipstream!
by lowrpm December 07, 2009
The hip mainstream. Something that is mainstream among hipsters.
Thick, black-rimmed glasses are totally hipstream.
by Kalle Bergman September 16, 2007