Crepe back satin or satin back crepe, depending on how you look at it, cuts and sews beautifully. It has a lovely weight that makes it easier to work with than a limper satin and it's pretty robust - generally speaking pins won't mark the fabric. I sewed the whole thing together, keeping one side seam open so I could wriggle into it just to be absolutely sure of fit before progressing any further. Only when i was certain that the dress was exactly right did I unpick the other side seam and shoulder seam thus separating the front from the back.
The gown cut out in gold satin before I unpicked it again..
I couldn't help but think when I got to this point how great this could be if it was cut out on the bias.
A view of the side.
From here the fun can really begin. The next step is to drape the chiffon directly onto the gown. Yay!!!