Bruce Jenner is transforming into a woman and is documenting it for a reality show of his own.

Well … that explains a lot.

The former Olympic decathlon champ will discuss his ongoing transformation on an upcoming episode of “Keeping Up With the Kardashians,” according to Us Weekly

Jenner has been the butt of jokes and the source of rumor and speculation for months, as his appearance has become more feminine. InTouch magazine superimposed Jenner’s face onto the body of “Dynasty” actress Stephanie Beacham for the cover of its Jan. 26 issue.

“He feels like he doesn’t have anything to lose,” a source told Us Weekly.

Jenner’s family has been mostly supportive. His stepdaughter Khloe Kardashian posted a picture with him on Instagram on Jan. 26, captioned “Father/Daughter time.”

Jenner’s other stepdaughter Kim Kardashian earlier this week told Entertainment Tonight, “I think everyone goes through things in life, and I think that story and what Bruce is going through, I think he’ll share whenever the time is right. I feel like that’s his journey to talk about.” She was also quoted recently as saying Jenner was “as happy” as she has ever seen him.

Jenner split from wife Kris Jenner in 2013. Since then, he’s grown his hair, been seen wearing nail polish, and had surgery to shave his Adam’s apple. At the time, he told TMZ “I just never liked my trachea.”

Well, that’s probably true.

When questioned about her estranged husband’s changing looks, Kris Jenner dismissed the talk as “silly.”

Us Weekly reported the 65-year-old Jenner — who was married twice before meeting his latest wife in 1990 and has kids with all three wives — was already “taking steps to live as a woman” when he met the Kardashian matriarch. A source reportedly said Jenner “had gone to doctors, started plastic surgery, and begun the transition.” Kris supposedly talked him out of it, but the issue was reportedly a source of tension throughout their marriage. They filed for divorce last fall.

While most of the family is on board with Jenner’s transition, Us Weekly quoted sources saying Kris has “refused to accept the truth” and remains in “denial” and “she has made no attempts to understand” what Jenner is going through.

Tony Hicks writes celebrity commentary for the Bay Area News Group. Contact him at Facebook.com/BayAreaNewsGroup.TonyHicks or Twitter.com/tonyhicks67