We are having a super casual wedding and I know what I'd like to wear. A simple white cotton dress with embroidery. Slightly below the knee length. Kind of mexican inspired. With short sleeves and a fitted waist. I have no clue where to find a dress like that although I've seen girls wearing them. I've looked online, at a couple vintage/thrift shops and at some regular stores (macy's, banana republic, ann taylor, etc). I'm approximately 36-26-36 [size 6-8] Any suggestions??