Caitlyn Jenner
Jenner has been hailed as the most famous openly transgender person in the world since she came out in 2015. Once dubbed "the greatest athlete in the world", Caitlyn Jenner is now more recognised as the quirky Kardashian dad of reality TV. A gold medal Olympic athlete, Jenner dominated the decathlon at the 1976 Games in Montreal, becoming an American hero. Her emergence, via a Vanity Fair magazine cover, prompted a re-examination of prejudices towards transgender people.
Caster Semenya
One of the most famous transgender athletes internationally. In 2009, after winning gold in the women's 800m, the IAAF began receiving e-mails from people who had doubts about Semenya's gender because of her "masculine look" and incredible speed. Tests were ordered and leaked results showed Semenya has no ovaries or a uterus. If the results are true, Semenya is intersex, and not transgender, as she is rumoured to possess both male and female genitalia.