Well, the girl's dresses and skirts wouldn't be that expensive to make... after all, the ladies' outfits for an ENTIRE series probably take less fabric then a single curtain! :)
Ever heard of "casual cosplay"? Just buy and coordinate clothes into outfits that look like your favorite characters outfits! Might cost less than actual cosplay. There's even tumblr blogs about casual cosplaying, tips, and where you can buy the clothes at. Look it up- if you haven't heard of it. :)
I doubt it
Princess Nike's dress is more a shirt one size too big...
Its available
there's lots of different ones but this is the closest I've found.
I can buy several... then I TOO can have... "lots of coats"...
*eyes shining*