It's amazing how much 80s stuff you can find in stores today. And of course the 2 biggies would have to be Urban Outfitters, and American Apparel.
Urban Outfitters Does the 80s
Urban Outfitters Does the 80s
Of course, you can always get authentic 80's looks on the cheap from your local thrift store! ;)
80s PARTY!
Insight's Spring 08 Collection
(You can find some of their stuff at Urban Outfitters)