I have seen this look (mostly on my students, I admit), and I can't make up my mind if it is nice or a bit naff. I've got a lovely long cardigan (not waterfall, please note!) in a sort of mossy green colour, quite slim-fitting. I don't think I can link to it as it's not this season, but was in Karen Millen. I also just got a dress from All Saints which I love (it is a lot more hourglassy in the flesh than it is on this model):
www.asos.com/Allsaints/All-Saints-Empire-Line-Cocoon-Dress/Prod/pgeproduct.aspx?iid=1226006&cid=2803&Rf-200=5&sh=0&pge=0&pgesize=20&sort=-1&clr=Optic
However, the dress is quite thin fabric - cold and also a bit see-through at the back where it doesn't hang in folds as it does at the front. Can I wear it with a cardie belted over it, or will that look a bit 1990s mutton?