Pattern: Laughing Moon #133, View B with Full Gathers.
Fabrics: 100% cotton, sheer weight. 100% silk for lining.
Mid-Waist: 36.5" or less*
Back Width: 14.5"
*The waist sits half-way between the natural waist and the underbust.
I took some pictures with the gown inside-out to better show the structure of the lining.