This is 70!
The former Olympian showed off an impressive set of abs in the two-piece suit as she attempted to cool down in the Aussie heat.
Jenner is living her best life on her latest reality show. She recently jumped out of a helicopter while filming, giving a thumbs up as she took the plunge.
She previously said that she is using the show as an opportunity to get her ducks in a row.
“I thought, ‘You know what, maybe I need to go down there and sit in the woods and figure out my life, what I’m doing’,” she told the Daily Star.
“I texted the kids, all of them, saying, ‘OK, I just got to Australia and they have taken my phone away I will talk to you when I get out, which is gonna be a while.'"
“It is probably the longest time I have ever gone without talking to any of my kids because it will be just about a month, four weeks without talking to them," she added.
Scroll through the gallery to see the sizzling shots of Caitlyn in her bikini in the Australian bush.
The Olympic gold medalist rocked her black bikini.
Jenner showed off her killer body in the skimpy suit.
Jenner carried her own clothes through the jungle.
Jenner spent her 70th birthday with the Jenner-Kardashian clan before she left for Australia.
Jenner looked like she was having a blast on her latest adventure!
No Turning Back
“I am in it until the end; I am in it until I am out of the jungle. There is nothing that could make me quit. I made a commitment to do it, and I will stick it out. It is not going to be easy," Jenner said.
She, who cooled off in a shower in the jungle, is no stranger to the world of reality TV. She previously starred on Keeping Up With the Kardashians for years with her ex, Kris Jenner, and their blended family.