The top is 1900s era, the bottom appears to have been added at some point (guessing 1960s) so it is in very sturdy condition - modeled after a classic 1900s night dress
best fits a modern small due to arm holes
modeled on a 27” waist / 36” hip / 32” bust
8.5 inch arm hole opening, free waist and bust up to a 50"
