I would never have known where to start, let alone let's discuss I can not sew.
Then I remembered the Measuring Up app that I had bought on the Apple App store site.
It saved my life.
Seems there were plenty of other parents/friends who knew how to sew.
I just emailed my child's stored body measurements to the costume fairy crew straight from my phone and knew everything would come out perfectly.
Measure twice, fit once.
Enjoy the play!