...I am so sorry that I don't remember who, asked me a while ago in the comment sections if I had a better photo of my red dress I wear in the Imaginaerum movie, but I don't. Today I did find a dress that can be an alternative to use as a model. The big difference, which you can add to this is a long tail since I had a long tail to make it look cool when lying on the piano, and also I didn't have any sleeves but I prefer this dress to the one I wore.
Here´s the dress I found:
Hope this can help you;=)