Actually it's officially their Harry Potter line of fashion clothes, but so far it seems all the outfits are just for the ladies. Black Milk specializes in funky costume-style fashions, some based on licensed franchises that include literary and fictional themes. Their offerings for Lord of the Rings and Star Wars are quite intriguing also.
Click on the picture for the full story from Io9. You can also find them on Facebook under "Black Milk Clothing."