It was perfect for a little Sorbetto variation. I drafted a peter pan collar using Gertie's tutorial and Casey's tutorial (Casey's was useful because her picture show very clearly how to overlap the shoulder seams to ensure your collar sits round the curve of the neck properly and doesn't flip up) and added sleeves (pattern for free here), with inspiration from the Colette Violet Blouse.
The rest were my usual sorbetto changes: size 16 armholes, grading from a size 2 in the bust out to a 6 in the hips, cut the size 18 length. Made it a blouse by not cutting the front piece on the fold and then folding back the front pleat section, interfacing it and turning it into the facings. I also did a sloping shoulder adjustment and probably should have done a sway back adjustment but decided not to (I was thinking, enough of the fiddling with this pattern, just make it already!!).
I added little mother of pearl buttons.
I didn't have enough fabric for both sides of the collar as I squeezed this top out of 1 metre of fabric, so the underside of the collar is a ivory dupion silk that has been in my stash for a decade (old curtain) and I use it regularly as skirt linings and such.
I made this up in a heavier cotton (Sorbetto 3, really need some decent pics of that one) and it really needed darts front and back to bring it in, but this blouse didn't need the darts at all, I think because the lighter fabric drapes much better.