Things You'll Need
Instructions
Measure the distance just below your breast to just above your hip with measuring tape. Then measure around your hips. Use this measurement to cut two identical pieces of tan-colored stretch fabric with fabric scissors. For example, if you measure 12 inches at your side and 34 inches around your hips, cut two pieces of fabric that are 12-by-17-inches because you must halve the length of the distance around your hips for the fabric.
Pin the fabric pieces together with straight pins. Sew the two 12-inch sides of the stretch fabric together with a sewing machine. Try to use light-colored thread so you can't see it underneath clothing.
Wear the stretchy stomach tube you just sewed around your belly area. Fill it with fiberfill, which is typically used to fill stuffed animals and pillows. Add as much as you want to create your belly suit, but be sure to place more fiberfill in the bottom area of the tube so your belly hangs low.
Put on a big shirt and look at yourself in the mirror from all sides. Check if the belly is too large or too small. Depending on its purpose, you may want it smaller if you are newly fake pregnant, or bigger if you are dressing up as Santa Claus.
Add or remove more fiberfill into your belly suit after your take off your big shirt. Once you think it looks OK, put the big shirt back on to check how it looks with clothing.