To create this blouse, I followed McCall's pattern M7570
. This was the pattern number I found it under (and also the number found on instructions) but the outer envelope displays M0533
It is a very easy pattern to follow. The difficulty is working with the material. Following the advice of the pattern, I used a two way stretch knit fabric. It was very challenging to pin this material. While measuring and preparing to hem the neckline, sleeves, and bottom of the shirt, I resorted to using scotch tape rather than pins. This prevented having to move the material.
The machines used for this project included a Serger and a conventional sewing machine. The Serger trims the seam allowance while sewing and thereby saving time.