I have not been very on top of the Dreamstress' Historical Sew Monthly challenges, not for lack of sewing, but because nothing I've done the past year is very historical!  Modern clothing and mending and commissions have been the order of the day.  But April's challenge called to me from the start: 

• April: Circles, Squares & Rectangles – Many historical garments, and the costumes of many people around the world, use basic geometric shapes as their basis. In this challenge make a garment made entirely of squares, rectangles and circles.

Now, I've done rectangular construction before (chemises, pajama pants, et cetera), but don't really enjoy, because I don't really enjoy the fit.  Boxy and relaxed isn't my favorite style for myself.  But then she mentioned circles, and I thought immediately of Teneriffe Lace.