This is a fun question. For me, it's almost everything. I love many era's in fashion, for several reasons, and can find a particular style from each that I adore.
I have always laughed at myself when it comes to florals. I love them, but I never think traditional "pretty" florals look right on me. They do, but I always feel uncomfortable in them. Strange. I'm fond of the embroidered or abstract/bright big and bold florals of the 60's and 70's. I blame this on my psychedelic floral childhood suit case, which I drug everywhere.
When I hear terms like "hipster" I think, who told cliques they could leave high school??