For the front of the chemise, measure up from the end of the shoulder of the shirt waist pattern one-third the length of the shoulder; measure down from the base of the neck of the waist pattern to the point desired for center front of neck of chemise, allowing 2" on the center front for fullness; draw a curved line and connect the point marked for the top of the shoulder with the center front of the neck. Measure down from this point the length desired for the chemise. Continue the under-arm seam of the waist down the length desired for the chemise. Connect the center front of the bottom with the under-arm seam, allowing the line to curve up a little (about 1 1/2") for the bottom of the chemise.
For the back, measure down from the center back of the neck on the pattern to the point desired for the top of the chemise, allowing 2" on the center back for fullness; measure up from the end of the shoulder seam one-third the length of the shoulder; draw the curve for the neck, connecting the shoulder and center back. Make the chemise the same length in the back as the front. From the perpendicular line at the under-arm seam in the shirt waist draft, measure out 1 1/2" at the waist line and draw the line for the side seam of the chemise through this point, making the seam as long as the seam on the front of the chemise. Lay the center front of the chemise pattern on a fold of the material when cutting it out. Do likewise when cutting out the back of the chemise.