Yeah, lots of opportunity here for sure. One thing I've been getting good feedback on from some fashion bloggers is the "shop the look" feature on each photo. Affiliate links is how many fashion bloggers monetize.
I wrote custom Backbone.js views and subviews to handle the shop tags. But you're right, this would be an awesome WordPress plugin. The affiliate network RewardStyle has something similar, but it's lacking a few things, which is why I wrote my own.