Winner of the third season of the show in 2003, Reggie has grappled with becoming legally blind and caring for her son Lucas, nine, who suffers from cystic fibrosis.
Reggie also split from her husband Dale Sorenson in 2012 and has struggled with depression.
“When my eyesight was failing ... I went through a really bad depression for about two years,” she said.
“I just couldn’t handle the world. But I got over all that, and now you just have to make the most of each day. You have to keep going.”
Reggie has expressed interest in returning Big Brother and is also keen to appear on Gogglebox. “Oh I’d love to be a Gogglebox reviewer,” she said.
Sara-Marie Fedele became famous on Big Brother for the bum dance and bunny ears and later appeared on Celebrity Big Brother, Dancing with the Stars, Totally Wild and even appeared on an episode of John Safran Vs God.
Sara-Marie also welcomed a daughter in April 2015, but when she turned 40 underwent a hysterectomy after suffering bad pains.
"I knew at the time I wasn't having any more children,' Sara-Marie told Mamamia, adding that she'd had endometriosis and cysts throughout her life but the hysterectomy "went terribly wrong."
Fortunately, Sara-Marie confirmed she's since recovered and "blessed to be back to normal." She's currently living in Perth and studying to be a teacher's aid for children with special needs.
"I haven't been in hibernation, I just didn't care to be known," she added." "I'm still the same person before, but a grown-up version. I did what I did and then I was happy to go."
Blair McDonough was the runner-up of the inaugural season of Big Brother. The fan-favourite went on to star in Neighbours from 2001 to 2006, dating his co-star Delta Goodrem. He then headed overseas and appeared on various reality TV shows in the UK.
He also featured in police drama Heartbeat before his stint on Sea Patrol and Winners & Losers.
In 2017, he had guest role in Home and Away. He is now married with two kids.
Otherwise known as Simon Deering, Hotdogs is one of the most well-known BB contestants for his nudie run in the house.
Rumoured to be dead at one point, Simon is in fact alive and well in WA working for real estate agent Purplebricks.
Chrissie was known for coming in second place behind Reggie Bird on Big Brother's third season, but these days she’s a high-profile media personality hosting Nova 100’s Chrissie, Sam & Browny show.
Chrissie is also a regular on The Project and has previously appeared in TV shows Can of Worms, I’m a Celeb, The Great Australian Spelling Bee and Long Lost Family.
Before BB, Fitzy had a career in AFL but since his appearance on the show, he’s gone on to become a well-known media personality, co-hosting Nova’s hugely successful drive show Fitzy and Wippa, and often seen on our TV screens.
Married with two sons, in 2012 he made his acting debut on House Husbands.
Constance first appeared on Big Brother when she was just 21 and captured the nation with her outspoken personality, going on to become a huge social media success with her own blog, clothing line and books.
In 2019, she appeared on Dancing with the Stars and is well known for her frank and open posts about the challenges of her growing family.
Skye Wheatley was known for being a bundle of energy on season eleven of Big Brother and, since placing third, has created quite the name for herself as an influencer and Youtuber.
Just two weeks ago, Skye welcomed her second child, Bear, with her partner Lachlan Waugh.
The social media personality took to Instagram to share a sweet snap of their newest member of the family, writing, "So in love with the newest addition to our family. Missing Forest (her first son) & Lachy so much already but so in love with this little guy 😍💖 p.s thank you for all your beautiful messages I love you guys."
We can't forget Tully Smythe from season ten of Big Brother. Her controversial relationship with Drew got tongues wagging all over the place as the then-25-year-old cheated on her girlfriend while in the house.
Nowadays, Tully is killing the Instagram game, having accumulated over 200,000 followers. She is also a blogger and podcast host. Though, sadly for some fans, her relationship with Drew is no more.
And, of course, the other half of the 2013 cheating scandal, Mr. Drew Anthony. This housemate was one of the most popular additions to the Big Brother house in season ten, placing fourth in the end.
Now, the genetically-blessed former reality star is putting his good lucks to use through his modelling career. AND he's still rocking the man bun. Phew.