Ever since the birth of my son, I've noticed my daughter has become such a little mommy. She likes to bring her dolly in the bath so she can bathe "baby". She also enjoys putting my son's diapers on her Baby - which is ill fitting since the diaper itself is larger than the baby! I made her a diaper that's better suited for her size with some left over flannel fabric. I went online to get some ideas on how to do this.
Ultimately I came up with this shape. I attached velcro for closures on the top of each back flap.