Shocking First Look At Bruce Jenner's 'KUWTK' Transition Special –– 'These Are My Secrets'

Bruce Jenner has already revealed to the world that he is transitioning to become a woman in his recent interview with Diane Sawyer. But now, fans get to see how the 65-year-old former Olympian told his own family in this weekend's upcoming E! special, Keeping up with the Kardashians: About Bruce.

RadarOnline.com has a sneak peak of the two-part series, in which his children learn to cope with his decision and offer their words of support, as well as thoughts on their father's journey.

In the clip -- set to a montage of emotional home videos and heartfelt messages -- Bruce says, "These are my secrets that I have to deal with on my own.

"I don't think I've ever been as scared in my life as I have been to be extraordinarily honest with my kids."

Kourtney Kardashian, his stepdaughter with ex-wife of 23 years Kris Jenner, said that Bruce's "biggest concern is he doesn't want to hurt" his family.

Watch the video on RadarOnline.com

Kendall Jenner could barely contain herself at the life-changing news.

"I just don't like when people say Bruce is gonna be gone," the emotional 19-year-old told her father, to which he replied, "I'm not going anywhere."

"I do want to meet 'her,' when he is ready," Kylie Jenner said. "When we're both ready."

The first installment of Keeping up with the Kardashians: About Bruce airs Sunday on E! at 9/8c.