Former Olympian 'Transitioning into a Woman'

It has been rumoured for more than five months, but now a family source has confirmed that Bruce Jenner is indeed undergoing a change to become a woman.

The former runner is said to be "happy" and in a "great space" which is why he has decided it's a good time to make such a huge leap.

Bruce - who divorced from wife Kris last month after 23 years of marriage - will open up about his journey in a docu-series which is due to air when he is ready.

A family source confirmed to US magazine, People, that he had made his mind up, saying: "Bruce is transitioning into a woman. He is finally happy and his family is accepting of what he's doing.

"He's in such a great space. That's why he it's the perfect time to do something like this."

The source added that the TV series will run Bruce is comfortable with sharing his change.

"It will air when he is ready to be open about his transition. But he's acting more an more confident and seems very happy.

"He's being very smart about it and also respectful about his transition. Instead of completely shocking everyone, his changes have been subtle, and his family had the chance to slowly get used to his new looks and life."

On Tuesday, Bruce's step-daughter Kim Kardashian defended his decision and said she thought he is the happiest he has been.

She told Entertainment Tonight in an interview: " "I think Bruce is very happy, the happiest I've ever seen him.

"Of course we support Bruce 100 percent.

"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."

"I will say that I think Bruce should tell his story his way 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 guess I'll kind of let everyone be curious and I feel like that's his journey to talk about, I just think it's his story to talk about, not really mine."