The Japanese publication POPEYE recently did an editorial called "Parka and Glasses". It's very geek chic, bringing in that nerdy mix-and-match stereotype. It also concentrates a lot on layering and neutral colors.
It's a great style guide for guys, since nerd chic is always hot no matter what the gender. But for you gals that wanna sport the geeky look this summer, I played around with the look on Polyvore. The sandals were a little non sequitur - I really like them, though, and the nerds at my high school were always wearing sandals.
Thanks to HypeBeast.com for the Pics