Mothma leapt to the top of the sewing queue due to realising just how complex her robes are. in terms of construction 🙂
Thanks to several sources but mainly Kay Dee:
These photos clearly show the position and shape of the seams. Of note is the shallow princess seam (it is not very curvy) and the seam of the outer sleeve as well as the seam that starts on the arm and turns into a raglan shape. It is to be inferred that it needs to end somewhat near the neck based on how stable the shoulder region is.
The hemming needs to happen asap, the weight of the excess fabric is one issue but the main reason is that the fabric clings to carpet!