To determine the right size wig for you, measure the circumference of your head from the front hairline, behind your ear, to the nape of your neck, to your other ear and then back to the front hairline. Jot down your measurement then consult the table below. Please note that sizes may vary slightly by brand.Many wigs come in petite, average and large cap sizes. Average size wigs, however, tend to fit about 90-95% of customers. See wig size chart below, so you are able to determine the best cap size for you!