Isis, I am constantly attracted to items like this too, but I struggle with them and always end up passing.
Every time i try on something like this, I can't get past the feeling that it makes me look "big," and I suppose I'm attached enough to the idea of flattery that I can never get past it on myself, even though I want to look "cool." But I want to look "cool" in the way a model looks cool in one of these dresses -- I want to look easy and breezy, and for it to be obvious that all that volume is dress, not my body. Alas, with my bustline, these things tend to look tentlike and matronly, not willowy and model-y.
So I'm torn. I definitely see the cool potential if you feel psychologically comfortable in it and can own the look. I'd like to see it with the neckline a little open, or maybe with a pendant to give a little bit of vertical emphasis to break the expanse above the bustline (I'm always aware of this on myself on high-necked, loose tops). And I would like it just a little bit longer too.
It will never be the most flattering look in the world for those of us who do not have straight body types, but the question is whether it's JFE for your comfort level. How do you feel in it? And how does your husband's opinion weigh in your comfort level? My husband has a really good eye, so when he is not a fan of something, it usually sours the look in my eye, unless I really, really love it.
Just some thoughts...