I just stumbled across this challenge and decided to post a Cinderella dress I made for a Disney Halloween Party a few years ago. Sorry about the awful pics, they were taken before my craftster days so I didn't even think to take a full body shot. I'm pretty sure it says somewhere in the story that Cinderella gets absolutely steaming on her night out, so I did try and recreate this the best I could
(Me and my friend who dressed as Belle!)
The dress was made the night before halloween 2005 from a king size bedsheet I found in a charity shop, along with two matching pillowcases. I also added a hula hoop ring in the bottom to make it really wide which did look pretty, but I ended up getting stuck between chairs/toilet doors/people a lot that night which resulted in me having to lift up one side of the hoop and trying to flash my bum as little as possible. Obviously didn't think this through haha!