This is a French seam. Isn’t it just perfect? It’s pretty and neat and shows no raw edges, and thus no fraying of the fabric. This is my first time doing French seams and I am now quite enamored because in addition to all those great features just mentioned its also super easy. It’s basically just 2 seams. The second one in-cases the first so that the raw edge doesn’t show. I would explain more how this is done, but there are tons of great tutorials out there already.
Oh la la!