I finally completed my first Pure and Simple Shell last night, having first started with this pattern back in July. I'll do my best to add a photo of it on me tomorrow.
Although I don't really care for the term "wearable muslin," basically that's what this is. I'd tested the fit with an actual muslin before (which was too small), tossed it, and decided to just size up and cross my fingers that it would work. I ended up making a straight Medium with a couple of minor adjustments: I tweaked the bust darts a little so they're in the right place and don't look like Madonna, and I also shortened the torso so the top ends in a more flattering place for me. I felt like the first muslin was just a bit too long on my 5'4" short waisted figure.
I used some more of the JoAnn's polyester faille that I used for the border print Tango Skirt. This time, the fabric handled better, probably because I was using the proper lengthwise-grain layout vs. the cross-grain required for the border print. This piece was leftover from a skirt I made several years ago.
This was the first Cutting Line pattern I've sewn, and I must say that I really liked it. Louise writes excellent instructions and the pattern pieces include some refinements that enhance the completed top. I'll be making more shells from it--it's a style that will look nice under a jacket. And besides, I've invested a lot of effort in it so I might as well benefit from my efforts to date.