Which vintage designers are you looking for?

I am off to Mercedes Benz Fashion Week in Miami this weekend, and it got me thinking.  I go to fashion shows at fashion week, and read magazines, and check out what celebrities are wearing to see what is going to be in style next, and who all the new hot designers are. Although some of these same trends apply to vintage since what is being created today is inevitably inspired by a past era, where do we go to figure out who the next hot vintage designer is going to be, or what labels we should start scooping up now, before they get too popular and too expensive?