Just so you know that I do not always sew with knit fabrics. I made this blouse teaching a new class; Casual Blouse/Flannel Shirt. We had great fun, but it did take us a bit longer than I anticpated. We used Kwik Sew 3555 and changed the hemline from shirttail to straight with side slits.
I really plan on wearing this more as a jacket than a blouse.
I used a medium weight Poplin, 97% cotton/ 3% spandex (yes it does have a bit of stretch for comfort).