I thought the concept was pretty clear from their site.

One suggestion I have is to interface the app with Facebook and/or Twitter accounts. For example, once you take and post a selfie in the app, it can post a message on your Facebook/Twitter profile letting that user's friend's know that, not only can they rate their friend's attire, but also help spread the word of your app.

If you already have this feature, you should definitely display it on your site.