How to Make Maternity Jeans Using Regular Jeans and a T-shirt

Step 8 Prepare to sew the t-shirt.

Cut a corresponding curve on the part of the shirt that is going to be the back. Slip the shirt over the jeans and pin the raw edges together, matching side seams and center front and back.

*Important!*
If you plan to pull the shirt up over your belly, then pin the right side (outside) of the shirt to the right side (outside) of the jeans. If you plan to wear these under your belly, then pin the wrong side (inside) of the shirt to the right side (outside) of the jeans.