Pretty much every time I check my Instagram feed, there's an image from somebody shopping. It's become "a thing" to post selfies from dressing rooms (you shouldn't do it) and share pieces you're considering buying-all through a well-chosen filter. Since this is clearly not going away, we decided to dive a little deeper and find the most popular spots to share pics. Our methods? We looked at the city's most popular stores on Foursquare, cross-referenced the number of shared pictures and put it all through the flux capacitor. Science!