From Truly Victorian:
This is a pattern for a buckram hat/bonnet frame, that needs to be covered with fabric. It has a tapered crown, in regular and tall height. The crown can be either with a peak in the front, or turned up, in regular width, or in wide width. It perches lightly on top of the head, slightly back, and is held in place with hat pins, or bonnet sashes.
Made with millinery wire, the hat is very durable and holds a good shape. We provide directions for one method of covering the frame during making up. There are many ways to cover a hat frame, however. Feel free to experiment with fabrics and folds to get a really professional look.
The Regular crown is suitable for 1875-1889.
The Tall crown is perfect for 1884-1889.