BOHEMIAN WEDDING DRESS SEARCH?

I have been in search of a wedding dress for myself. I am a modern hippie, looking for a dress that Janis Joplin would wear to her wedding. Anybody know websites that fit this type. It doesn't have to be categorized as a wedding dress, I still want it to be white. I have found dresses I liked that were titled "mexican wedding dresses". I am a size Large, so sending to me a size 0 website will not help. Thanks!