Is it a bird, a plane?

So I've got a cold, I've stayed up all night sneezing and sipping my decaf green tea in search for the correct terminology of this garment (pictured below). Without any help from the Fashionista community, I have thus far come up with the following:

• cloak
  
• cape
  
• cloak-cape-worn-as-a-dress
  

I'll update tomorrow with more images of this mysterious item. But most likely the name will be completely obvious, I'll look the fool and as a result of my ignorance I will recoil in defeat and profusely apologise for wasting your time. Until then... happy hunting.

stylesightings

Hold on. Why do they have matching boots? The Olsens were cute when they dressed the same for like, five seconds.