The 65-year-old has been pictured in recent days with manicured nails, smooth legs, longer locks and what appeared to be fuller lips.
'Bruce is transitioning to a woman,' a family insider confirmed to People. 'He is finally happy and his family is accepting of what he's doing. He's in such a great space. That's why it's the perfect time to do something like this.'
'He's being very smart about and also respectful about his transition,' the insider said. 'Instead of completely shocking everyone, his changes have been subtle, and his family has had the chance to slowly get used to his new looks and life.'
'He has come out to those closest to him... He's been through a dark period and is coming out on the other side,' added the insider.
Now comes word that the former Olympian's change is for real and that Bruce's ultimate goal is to live life as a female.
Bruce has six children from his three marriages - daughters Kendall, 19, and Kylie, 17, with Kris Jenner; sons Brandon, 33 and Brody, 31, with ex-wife Linda Thompson; and daughter Cassandra, 34, and son Burt, 36, with ex-wife Chrystie Crownover.
And he has four stepchildren from his marriage to Kris: Kourtney, 35, Kim, 34, Khloe, 30, and Rob, 27.