Here are 3 simple steps to measure your head correctly:
Before you measure, make sure to flatten your hair, use
a cloth tape measure and do not pull the tape measure, just
rest it over or around your head. Pulling stretches the
tape and will give you the wrong size.
Step 1 - Around the Head. Measure around your head at the hairline. The "around
your head" size of every wig can be adjusted
up to 1" larger or smaller to ensure a secure
fit.
The tape should be just above the ear and along
your natural hairline.
Step 2 - Front to Back. Measure your head from the nape over the crown to
the top of your forehead where
your natural hairline is.
Step 3 - Ear to Ear. Measure your head from the top of one ear, over the
crown to the top of the other ear.