(At this time, Bruce Jenner has not chosen to publicly identify as a woman and so E! News will continue to refer to him as Bruce and use male pronouns, until he indicates otherwise.)
During tonight's two-hour sit-down interview with ABC News, those closest to Bruce couldn't help but share their support online.
Kim Kardashian, who has been "by far" the most accepting of Bruce's transition, tweeted, "Love is the courage to live the truest, best version of yourself. Bruce is love. I love you Bruce. #ProudDaughter.
While speaking with Sawyer, the 65-year-old Olympic gold medalist and parent of six opened up for the first time about his journey.
"Yes, for all intents and purposes I am a woman," Bruce said. "People look at me differently. They see you as this 'macho male,' but my heart and my soul and everything I do in life, it is part of me, that female side is part of me. It's who I am. I was not genetically born that way."
"As of now, I have all the male parts and all that kind of stuff, so in a lot of ways we're different, OK? But we still identify as female," Jenner continued. "And that's very hard for Bruce Jenner to say. 'Cause why? I don't want to disappoint people."
Kylie Jenner also got candid on social media once the interview came to an end. In two tweets, the 17-year-old shared how proud she was of her dad.
"Understandingly, this has been very hard for me. You will hear what I have to say when I'm ready to but this isn't about me," she wrote. "I'm so proud of you, Dad. You are so brave. My beautiful Hero."
Last but not least, ex-wife Kris Jenner shared her thoughts on the emotional interview. "Not only was I able to call him my husband for 25 years and father of my children, I am now able to call him my hero," she wrote to fans.
Learn more about what it means to be transgender at http://glaad.org/transgender
If you are transgender and need help or advice, contact the Trevor Project http://t.co/guMjyYIfng