It is a sacred garment worn by the priests of the church.
There are fine gathers around the neck, and the fluffy volume comes from all of these fine gathers.
Measurements are taken along the pattern, so they may differ from the actual shoulder width and sleeve length when worn.
Just for your reference.
The material is light and delicate linoleum. The lace part at the bottom is the chain stitch embroidery seen in Cornelia curtains. Repairs can be seen in this part.
