Its not a pattern, I made this using leftovers from a couple other baby quilts. Whatever size you make the center square (6.5x6.5) the white sashing would be half (3.5x6.5) and the cornerstones would be a fourth (3.5x3.5). Sewn together that would be just under 40in square. I added a 2in scrappy border to get up to a 43in square. I like to make my baby quilts 40-44in so I can use a single width of fabric for the back.