Melissa Shoes
Randomly, when I was looking at some fashion photo set on flickr, I ran across someone wearing melissa+campana shoes. at that point, I didn't know they were plastic; I was just looking to get a pair in exchange for the red shoes that didn't work which I got on my bday (I would've just gotten a half size up, but no site sold that size), so was looking at all flats.
The word jellies was almost a turn-off, but after reading enough about how they differ from others and smell like fruit (!!!), I think I must have them.
Sadly, they didn't come in colours I would've rather had them in like black or red (at least not at stores in English.. hah. kanji anyone?), but purple may just work.
Here's the main website with all the designs: http://melissaaustralia.com.au/
The place I plan to get them from is here: Unsung Designers