Here is what I was able to reuse from a white gown I found for $2.
Even after making Em's Elsa gown, I had enough fabric left over for another dress, a pair of shorts, and other small projects. I am trying to teach myself how to make a nice looking double bodice. I had a time and the dress has many flaws, so I shall swallow my pride and keep trying to learn. Emily was easy to please and saw the love I put into it and not the flaws.
The best part is that I get to make memories and share a skill with my precious four daughters. Amanda can make her own dresses. Bethany is well on her way in learning. Emily and Hannah have a few basic hand sewing skills and have ran a machine for a few minutes.