These are all great, lightweight cottons: dotted Swiss, lawn and batiste! They are substitutes for each other. You could look at cotton dimity or shirting fabrics. I highly recommend Farmhouse Fabrics for all these fabrics. Harts Fabric carries wonderful lawn in solids and prints, too, and I recommend them. And yes, you nearly always want to allow for shrinkage if you’ll be washing the finished garment. Usually no more than a 1/4 yard is necessary. Then again, I highly recommend getting an extra yard or two anyways for “user error” or cutting issues. Best of luck with your project!