I periodically get questions about age limits for piercings, and I got one today:
How old does a piercee have to be to get nipple piercings done?
To get nipple piercings, or any below-the-neck piercing other than a navel, the piercee would have to be 18 years of age or older. For other piercings such as the navel or above-the-neck areas, it depends on local laws and the ethics and policies of the piercer. That said, there is no federal legislation about body piercings; states and localities handle their own regulations. The extent of the laws varies widely, and some areas don't have any legislation regarding piercing at all! There are other laws that could be applied to piercing, however. For example, a parent who gives permission for her minor child to get an adult piercing (such as nipples or genitals) could be charged with reckless endangerment of a minor. The piercer could also face these charges for performing the piercing, even if the parent "gave permission." The policy I used for my studio is below: