Attribution: Mid-14th Century English Kirtle
Fabric: 100% linen, medium weight
Construction: French seams where assembled on a sewing machine
Hand-worked seams along neck, front opening, and inside sleeve
Completed with the help of Diana Roberta about two months before this posting.
In the photos it is laced with a shoelace, solely because when I made the gown I did not have period-appropriate lacing.
At the time I made this gown I was still very early in the process of learning about medieval garb, so date/culture attribution is based on my best guess at the time.