That looks like a fashoin mag spread - it probably lists the designer right in the upper corner text, if you can find some way to zoom in on that. Or maybe look for the actual magazine in stores?
I really like it as well, by the way.
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If you reveal your secrets to the wind you should not blame the wind for revealing them to the trees.
Yes, I think it's a Japanese designer. You could probably find the label at Neiman's... this dress is most likely <at least> 400-500 USD. Or try EBAY- never know.