Trying to define this garment, I would say it is a sweater, however I love to wear it like a dress. In fact, I wear like that, with a short jean which you can see, and in this way it looks like a dress.
The typical use is like a sweater with jeans and some shoes, sneakers or even heels. Actually, I am thinking on using it with some tights and sneakers this coming Winter.
I share this clothes for several reasons. First of all, I consider really original, even it is a sweater, the pleating neck and the ruffles at the bottom with this transparent fabric, are giving some special touch to this garment.
Another reason, it is the multiple uses and styles you can get with this sweater depending your footwear, or even your jeans.
And the most important motive is it was a great purchase. I bought it in New York at Century 21, and I highly recommend you visit this department store if you go to NYC. In this shopping center you can find very original and special garments, shoes and bags from great designers at this store at really good prices, in fact this is like an outlet in the middle of this amazing city.
Concretely this garment is from Maison Martin Margiela, but you can find special pieces of hundreds of designers. I recommend you go shopping here. You do not regret this visit.