Use light weight fabric so it folds correctly.
Check here for instructions on how to make your own bodysuit.
Step 2: Make Cowl Neck Hood
2. Fold the fabric in half on the 45" side so it is now 22.5"x35"
3. Sew the two 35" sides together.
4. Turn it inside out so the seam is on the inside. The fabric should look like a tube.
Step 3: How to Put Hood On
The fabric will bunch up and drape around your neck. Pull the edge of the fabric back up over your head so it sits on your forehead.
Grab a picture of Gaga and adjust to make sure it looks right!