Bruce Jenner
Reality star Bruce Jenner has not addressed speculation that he is transitioning into a woman Getty Images

Kim Kardashian has seemingly confirmed widespread speculation that her stepfather Bruce Jenner is transitioning into a woman after revealing that he is on a "journey" on US television.

Appearing on Entertainment Tonight to celebrate the upcoming debut of her T-Mobile Super Bowl advert, the 34-year-old reality star alluded that there was some truth to the rumours by refusing to deny the claims. Kanye West's wife instead acknowledged that Jenner has a "story" to tell.

"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," she said. "I feel like that's his journey to talk about."

The mother-of-one went on to say that she and her sister support the former athlete in his life choices.

"He's our dad so we support him no matter what, and I think when the time is right, he'll talk about whatever he wants to talk about," she said before adding: "I just think it's his story to talk about, not really mine."

Jenner has been the focus of sex-change speculation after he reportedly had his Adam's apple surgically reduced, a common procedure often undertaken by men seeking gender reassignment. The 65-year-old reality star also allegedly started taking oestrogen and asked to be referred to as "Brigitte".

While Kardashian may have been willing to discuss the rumours, her mother Kris Jenner has shut down claims that her ex-husband is seeking gender reassignment as completely false and unfounded.

"Ninety-nine percent of the stuff in the tabloids is made up," she previously told Entertainment Tonight.

Earlier in January, InTouch magazine came under fire after it featured a doctored photo of Jenner wearing lipstick, curled hair and a woman's green silk scarf on the cover, with the headline "My Life As A Woman".

It was just one of the media outlets Russell Brand accused of "bullying" Jenner, claiming that transphobia is the new homophobia.

The 39-year-old British comedian slammed widespread reports as "cruel" and "judgmental", during an episode of his YouTube show Trews - which stands for True News.

"This is bullying. Stop. Stop. Bruce Jenner is a human being," Brand said. 'If you want to learn more about transgender issues, look at"

But despite the public scrutiny, Kardashian said Jenner is the "happiest" she's ever seen him.