Caitlyn Jenner is a woman who's gender identity differed from her assigned sex.
== History and definitions ===== Definitions ===The terms gender identity and core gender identity were first used with their current meaningone's personal experience of one's own gendersometime in the 1960s
 (1998) report the contrasting case of a 26-year-old woman with XY chromosomes whose penis was lost and who underwent sex reassignment surgery between two and seven months of age (substantially earlier than Reimer), whose parents were also more committed to raising their child as a girl than Reimer's, and who remained a woman into adulthood

