This week, New York City Mayor Bill de Blasio signed legislation into law adding a third gender to birth certificates for individuals born in the Big Apple. The bill, as passed by the City Council last month, allows individuals to change the M or F gender designation on their New York City birth certificate to X with a personal affidavit, but without any official documentation from a doctor. Previously, a 2014 NYC law allowed people to change their gender designation from M to F or vice versa, but this law now creates the X category for non-binary or non-conforming gendered individuals. New York City now joins New Jersey, Oregon, Washington State and California in allowing the X gender on birth certificates, while Maine, Oregon and California along with Washington DC allow the X designation on driver’s licenses.