The 65-year-old former Olympian was born William Bruce Jenner and was listed as a male on her birth certificate. She petitioned to legally have her name become Caitlyn Marie Jenner and her gender changed from male to female.
Jenner was required to show the court a documented declaration of the gender change, which includes clinically-approved treatments.
The world was first introduced to Caitlyn Jenner when she appeared on the June issue of Vanity Fair with the headline, "Call me Caitlyn." Jenner admitted to the publication that it took two years to pick out her new moniker.
"It's one of the hardest things in life -- choosing your own name," she said. Jenner said she came up with ideas by watching the Miss America pageant, and considered Heather and Cathy as names. It was her assistant who suggested she go with Caitlyn.
In her first sit-down television interview earlier this month, Jenner was asked by Ellen DeGeneres if there was anything she ever missed about being known as Bruce. "Absolutely no," she said. "Because as a woman I can do all this fun stuff anyway."