Target's been having designers contribute to their women's clothing collections for a while now and most of them have been highly successful. Running along the same lines as H&M (who's Comme des Garcons line comes out so soon and it going to be available in NYC and looks ADORABLE), the Target lines tend to be more available in terms of location and cost.
The newest designer to contribute is Thakoon who's old school design powerhouse has been revamped in the past pret-a-porter collections and seems to want to branch in a more massively produced direction. Judging by the preview photos of the collection, which will be available starting Christmas, and by the reviews of it so far it does seem like you should keep these clothes stored until better weather unless you wanted to be miss tropicana at your job/office/current location. Not really my style but still loving the collaboration!