Long before Caitlin Jenner came out, people who feel they have been born in the wrong body have taken steps to change what gender they're identified as.
What's changed now though is that some transgender people don't have to wait until adulthood to make the change. Primary schools and parents are now trying to find ways to help young children make the transition.
And while it can be tricky, it's also important.
We talk with Wellington GP Dr Cathy Stephenson, and transgender women Jevon and Megan.