Fabric: Silk/cotton blend, though I can't be certain. I'm certain it is mostly silk, with the second fiber being something natural. The burn tests were non-melting, grey ash with the scent of burning hair, which matches silk.
Available on Etsy HEREMeasurements:
Chest - 43" max
Waist - 34" max
Hip - 50" max
Hem - 40" at front
Back Width - 16"
The black satin portion is a plastron with a full collar and ties securing it around the waist and underbust.