The below patterns are based on my research. Please contact me with questions!
Pleat-and-band Ionian Chiton
Documentation for this style can be found here: Pleat-and-band Ionian Chiton
There are two chlamys styles: rectangular and half-circle (or almond). In representations, the rectangular style has four points while the half-circle has two. The below image is the half-circle type. The evidence for this type is from Strabo’s Geography Book 2 Chapter 5: “Thus the length of the habitable earth is above twice its breadth. It has been compared in figure to a chlamys, or soldier’s cloak, because if every part be carefully examined, it will be found that its breadth is greatly diminished towards the extremities, especially in the west… That in configuration it resembles a chlamys is also clear, from the fact that at either end of its length, the extremities taper to a point.”