Yet on Friday, the Daily Telegraph revealed Jenner, the parent of Kendall and Kylie Jenner and step-parent to Robert, Kourtney, Kim and Khloe Kardashian, had landed in Sydney.
She is now understood to be in hotel quarantine, further taking up a space that could have gone to a returning Aussie.
A spokesman for the Stranded Aussies Action Network told news.com.au there was no transparency around who qualified to fly into Australia and more clarity was needed particularly as the caps had now been slashed in half.
"[Jenner's arrival] is clearly a slap in the face for stranded Aussies.
"But it's not the celebrities that are to blame, it's the failed government policies that allows this to happen."
The paper reported that Celebrity Big Brother will be filmed at Sydney Olympic Park, close to New South Wales' largest vaccination hub.
Celebrity Big Brother will be hosted by Sonia Kruger and is expected to air later this year.
Before leaving the US, Jenner posted an image of herself on Instagram wearing a "Caitlyn for California" T-shirt. She is running in a September election to be governor of the country's largest state.
Former Olympian Jenner has previously competed on US and British reality shows as well as, of course, Keeping up with the Kardashians.