1.Measure your full circumference from hairline around to your starting point.
2. Measure from the top of your Ear to Ear
3. Measure from the front of your head to the nape of your neck.
The measurement chart below will let you know if you need to order a small, average, or large. Most wigs are average. If a smaller size is need, most comes with adjustable bands to make it smaller or larger.
https://youtu.be/xLuHxrHorLE