Caitlyn Jenner is a woman.
Caitlyn Marie Jenner ( born October 28 , 1949 ) , formerly known as Bruce Jenner , is an American television personality and retired Olympic gold medal-winning decathlete . She has been called the most famous openly transgender woman in the world . From 2015 to 2016 , Jenner starred in the reality television series I Am Cait , which focused on her gender transition . A trans woman ( sometimes trans-woman or transwoman ) is a woman who was assigned male at birth .