While bonnets continued to be worn for into the 19th century, they were high fashion during regency times. No movie made about Jane Austen novels without all of their female characters wearing bonnets when going outside! No respectable woman of age would leave the house without a hat of some sort during daytime, and bonnets were not only charming and framing the face, but also put little pressure on the carefully made locks you needed for the evening at the ball...
After researching on the internet and finding a lot of patterns to buy (unfortunately the delivery would have been 7 days after received payment, which would leave me with very little time to sew the bonnet) or instructions how to alter a bought hat (did you try and find a light coloured hat recently?), I was devastated. The only solution for me was to wing it. So wing it I did:
The pattern is self drawn, it took me two trials to give the crown the needed puffiness. The pattern pieces are a circle for the crown and a curved rectangle:
Fabrics are the same as for the reticule, the satin ribbon was bought in store. I had the flower at hand and since ordering buckram was no option (time!!!), I used skin coloured (no white available *rolleyes*) foam rubber to hold the front up.