Many people have more than two nipples. Having a third or even a fourth nipple is pretty common, both in males and females, and is considered harmless. In fact, celebs such as Tilda Swinton, Harry Styles, Carrie Underwood and Mark Wahlberg all have an extra nip and are pretty proud
Called supernumerary nipples, these extra bits come in different variations. It can present as just a nipple by itself, or it may have an areola. Some may even have a bit of actual breast tissue attached! In some people, these extra nips even lactate during pregnancy!