Please measure your beauty's head to get the most accurate sizing as shown below:
Newborn: 13"-15" (preemie-infant)
Baby: 15"-17” (3 month-1 year old)
Kid: 16"-18” (toddler, young child)
Adult: 18"-20” (older child, tween, teenager, adult)
NOTE: All products stretch an additional 1”-2”. If you are unsure, size up!