When I travel I like to pick up local fashion magazines. Recently I was in Victoria, BC, Canada. I picked up the May issues of Flare and Fashion, Canadian fashion magazines.
The Fashion magazine had a article on trends (page 66) and included this segment:
"Take the rise and fall of last season's kitten heels. From Prada to Stella McCartney to Giambattista Valli to Marc Jacobs, this retro-inspired footwear repeatedly graced Fall 2010 ready-to-wear runways. Originally seen as a shift away from the ever-reigning platform shoe, it quickly trickled down to mass retailers like Joe Fresh and Payless Shoes. One season later, they have vanished and the platform heel has reclaimed its place on the pedestal."
The majority of the article focused on trend forecasters and trickle-up versus trickle down fashion.