Big Brother's Tully shares tips for getting cast on the 2025 season

She tells Chattr she has no regrets about choosing to go into the house in 2013, but admits she does sometimes have “embarrassing flashbacks” she “think[s] about at 2am”.

“I’m a firm believer that every chaotic decision has led me to exactly where I am now — and honestly, life’s pretty great. Do I wish I had the maturity, self-awareness, and impulse control in 2013 that I have now? Absolutely. But I also learned a LOT (mainly that national TV is not the place to process your emotions in real time,” Tully explains.

As for her second competition in 2022, there’s only one thing she would do differently. “My only regret is trusting Tim and Drew… again. You’d think I’d learn!” she jokes. “But I had a ball, played the game how I wanted to, and walked away proud of how I handled myself — mostly.”

The podcast host recently took to Instagram to share her top tips for those submitting a casting application — which you can do on Channel 10’s website — and there’s some great advice for all those budding reality TV stars out there.

Tully encourages potential contestants to know their own story, and emphasises that producers are looking for “characters” and “people with a point of view, a lived experience, or a big personality”. Leave your “audition gimmicks” at home, and be prepared to be “unfiltered but self-aware”.

The former Big Brother Australia contestant believes producers want “polarising” housemates, so if you don’t have a thick skin, this might not be for you. “Can you handle being talked about? Can you back yourself under pressure? Be willing to take up space — even if it makes some people uncomfortable,” she writes.

Lastly, Tully shared a warning to those wanting to jump headfirst into the pressure cooker of Big Brother. “Do you love your job? Your partner? Your privacy? Your reputation? Because these are all things that could be put at risk by appearing on a reality TV show like Big Brother. You’re being filmed 24/7, all it takes is one mistake, one throwaway line… and the public could turn on you,” she says.

Tully reveals what contestants need to know before entering the Big Brother house

Tully has played both Channel Seven and Channel Nine’s Big Brother Australia versions, so she’s experienced it all. While it’s a bit of a mission to get cast, the real journey starts when you lock yourself in a house with strangers and agree to be filmed 24 hours a day.

“Your life will never be the same — in 101 weird and wonderful ways. Some changes will be big (like strangers knowing intimate details about your dating history), and some will be small (like never being able to look at a hidden camera the same way again),” the content creator spills.

And for those studying up on Big Brother Australia strategies? Forget it.

“Please, for the love of Big Brother… be yourself. These days, everyone walks in with a ‘strategy’ they’ve borrowed from five different reality formats and a TikTok thinkpiece. But the public — and your housemates — will sniff out a fake faster than Sonia [Kruger] can say, ‘It’s time to go…’. Just show up as the hot mess, people-pleaser, villain, or wildcard you truly are. That’s the stuff people connect with,” she says.