We can make formal pleated ascots from most of our Macclesfield silks and some other fabrics that are large enough.
Here are sample measurements (the illustration is for an informal ascot which has the same measurements as a formal acot but the formal ascot does not have pleats) - please tell us in the notes area when you checkout if you would like something different. https://www.samhober.com/a/Informal-Pleated-Ascot/
Please email us before you order if you have questions and fabrics or constructions.