In the enormous market for high-end women's footwear, where exclusive branding and fervid demand drive runaway retail costs, the potential for profit in artful knockoffs is tremendous. Accordingly, bootleggers have rapidly expanded their production of stilettos, pumps, booties and more -- with some producing imitations so realistic it takes an expert to tell the difference.
Now you can test your own expertise. The following slides depict two shoes each – but only one is the genuine article. Can you tell which is which?
Watch the "20/20" report airing Friday at 10 p.m. ET on the huge underground market for fake designer footwear. (ABC News)