Ok - so maybe not what you're thinking, but close enough!
We're in NY right now visiting my in-laws, and one goal my MIL had for this trip was to find DD a dress for her Bat Mitzvah in September. After 2 days of shopping (and one really pushy saleswoman

) she finally found the dress of her dreams - and it's a Disney Dress!!!!
Seems that designer Kirstie Kelly has a bridal line she's done for Disney and DD chose the 2008 Spring Cinderella Maiden dress in the color "Lipstick". I'd try to post a picture, but I'm on my MIL's computer had she has no good photo editing program. She chose style KKC3 (which by the way looks a lot cuter on DD than on the sultry model

)! The sash is going to be chocolate brown. We actually had to order it now instead of waiting a few months because the order time for this line is 3-4 months! They will be making a shrug-type jacket for her rather than the shawl (she has to have her shoulders covered for the service) and the dress comes to DD's knee which is absolutely the perfect length for her.
Here's the link:
Kirstie Kelly for Disney Fairy Tale Weddings - Maidens