This beautiful shibori (tie-dye) is already cut to make a haori jacket. The skinny pieces under the arms are cut and attached by someone who knows what he is doing. It has not gone through Yunoshi, the process to stretch shibori using steam. The size of this gown is extremely small at this moment because a regular haori (short jacket) roll is used to make into shibori fabric. 36 inches x 16 1/2 inches long with 9 inches hemming tacked inside.
The fabric is a good silk, an older silk without being mixed with other fibers. I do not think that stretching is difficult as a steam iron can completely stretch it if that is what you want.
There are many thing that you can make using this fabric; sibori has been used to make hair ornaments (most of current ornaments use all synthetic shibori).