Diy Wonderwoman Costume . We bought 3 yards of it and cut into 15″ long strips for 3 year old curlycue. Let’s get right into how we made this modern wonder woman costume (from batman vs superman, 2016 and wonder woman, 2017). Make Your Own Wonder Woman Costume DIY Halloween Costume Ideas from hubpages.com Cut the blue and white fabric into strips, about six inches wide — these will become stripes. I took a measurement around my calf, added a couple of inches, and added a shoe at the bottom of it (both sides just the same). Then ask a friend to cut it for you (or ask a friend to wear it).