For the top, you’re basically making a box with sleeves. Start with your chest measurement (the fullest part) divided by 4, then add 2 inches for ease. Draw a rectangle that’s that wide, and as long as you want the top to be (usually hip to shoulder).
For the sleeves, draw a rectangle that’s your armhole depth (measure from shoulder to armpit) by sleeve length (shoulder to wrist). Add a gentle curve at the top for the sleeve cap—unless you want pajama sleeves that stand straight out like a scarecrow. No judgment if you do, honestly.
The Collar and Placket (Optional, but Fun)
A simple scoop neck works fine for pajamas. Just draw a curved line from shoulder center to front center, about 3–4 inches deep. If you want a button-down placket, add a 2-inch wide strip down the center front. I skip the buttons and just sew a fake placket—why create more work for myself?
Woman Pajama Pant Pattern Making In cad software| How To Make Pajama
