It's been 16 years since Celebrity Big Brother first began and the show has changed a lot over time.
From fake celebrities, to 'showmances' and a controversial race row, CBB is almost unrecognisable from its humble beginnings.
The series began just one year after Big Brother was launched and six celebs entered the house, for eight days, in aid of charity.
Some celebrities have benefited from their stint more than others with the likes of Chantelle Houghton - who wasn't even famous when she went in - now being a regular face in the tabliods.
The new series, which starts on Tuesday, January 2 on Channel 5 at 9pm, will be an all-female launch to mark 100 years since women won the right to vote in Britain.
However, in true Big Brother style fans can expect plenty of twists and turns along the way. Male contestants will be introduced to the house later on in the series, but as ever Channel 5 is keeping tight-lipped about the line-up.
Channel 5 has confirmed that Boris Johnson's sister Rachel will be going into the house, and today Gogglebox star Sandra Martin retweeted a post from a fan wishing her luck in the upcoming series - although previously she has denied the rumours.
But where are all the winners now and how many do you remember?
2001 Jack Dee
The first series was in aid of Comic Relief and stony-faced comedian Jack Dee was crowned the first winner.
The show is probably most remembered for housemate Vanessa Feltz having an on air meltdown when she began methodically writing on the kitchen table using chalk. She was the first ever contestant to tell Big Brother to 'f**ck off'.
Since leaving the house Jack has refused to be associated with the CBB, and will not allow any clips of his time in the house to be shown on TV.
2002 Mark Owen
The Take That singer was voted the 2002 winner of CBB.
Other housemates in the series included Les Dennis, Sue Perkins and actor and DJ Goldie.
Since winning the show Mark has enjoyed a stellar comeback with Take That and has been on several arena tours.
Happy Monday's Mark 'Bez' Berry was the last man standing in the third series.
John McCririck, Germaine Greer, Caprice, Brigitte Nielsen and her ex mother-in-law Jackie Stallone were also housemates.
Since leaving the house Bez has reunited with the Happy Mondays members and they went on tour in 2015 for the 25th anniversary of their album Pills ‘n’ Thrills and And Bellyaches.
2006 Chantelle Houghton
Chantelle was the first contestant to enter the 2006 house. She had originally applied to be in the non celebrity version but was offered a place in CBB despite not being famous.
Big Brother gave her the task of convincing her fellow housemates she was famous. The pretty blonde had to pretend she was a member of a made-up girl band called Kandy Floss.
Whilst she was in the house Chantelle began a romance with Ordinary Boys frontman Preston. Eight months after leaving the house the couple married but divorced after one year.
In 2012 she gave birth to her daughter Dolly with then-fiancé Alex Reid - more to come on him later.
2007 Shilpa Shetty
This was one of CBB's most controversial series and sparked debates across the country.
Shilpa - a Bollywood actress - was the subject of arguments with housemates Jade Goody, Danielle Lloyd and Jo O'Meara.
Viewers were concerned that Shilpa was the victim of racist bullying by the group. The girls received a public backlash when they were evicted.
Shilpa is now married to business Raj Kundra and in 2012 they welcomed a son called Vivaan.
Jade was a contestant on the non celebrity version of the show in 2000. She tragically died from cervical cancer in 2009 at 27.
2009 Ulrika Jonsson
Celebrity Big Brother disappeared for a year following the public backlash of the 2007 series.
The public voted Ulrika Jonsson as the winner of the returning series, despite receiving the most nominations from her housemates.
She was joined in the house by Michelle Heaton, Austin Powers Mini-Me Verne Troyer and Terry Christian.
Ulrika has since stepped away from the limelight and in October 2016 she revealed it was due to a string of failed romances.
Speaking on Loose Women, she said: "A little bit my own choice, just wanting to take a little bit of a backseat, but also I wasn't getting offered the work I wanted to do," she said.
2010 Alex Reid
The cage fighter was known for being the spouse of glamour model turned businesswoman Katie Price.
The 2012 show was the final series to air on Channel 4 and saw Katie's ex Dane Bowers, Vinnie Jones, Lady Sovereign and Ivana Trump as contestants.
Alex and Katie split up in 2011 and he welcomed a daughter with former CBB winner Chantelle Houghton in 2012.
2011 Paddy Doherty
The 2011 offering was the first series to air on Channel 5 and the exact line-up of the show was top secret before launch night.
Paddy found fame on Irish traveller documentary My Big Fat Gypsy Wedding. Other housemates were Amy Childs, Kerry Katona, Sally Bercow and Jedward.
After being crowned the winner Paddy appeared in a string of Channel 5 documentaries including When Paddy Met Sally.
2012 Denise Welch
In 2012 CBB bosses changed the format of the show and instead of having one series a year fans were treated to two. Channel 5 has continued to air two series of the celebrity version every year.
Former Corrie actress Denise won the first series of CBB 2012.
She shared the house with Reservoir Dogs star Michael Madsen, EastEnders' actress Natalie Cassidy, former X Factor star Frankie Cocozza and Natasha Giggs - in 2011 it was revealed Natasha had had an 8 year affair with her brother-in-law Manchester United footballer Ryan Giggs.
In 2013 she sensationally quit her presenting job on Loose Women and in February 2016 she released a novel called If They Could See Me Now.
2012 series two Julian Clary
Julian Clary become the undoubted 'Queen' of the house when he won the second series of 2012.
It had initially been announced that Facebook voting would be in effect for this series but due to technical issues, Channel 5 cancelled these plans.
Julie Goodyear, MC Harvey, Coleen Nolan, Martin Kemp and Samantha Brick joined him in the house.
In 2016 Julian married his long-term partner Ian Macklet and confirmed the news on Twitter.
2013 Rylan Clark
After finding fame on X Factor Rylan Clark was the last man standing in the 2013 series.
He came to blows with fellow housemates Speidi (Spencer and Heidi) on more than one occasion and they were seen fighting and making up throughout their time in the house.
In a funny twist of fate Rylan now presents spin-off show Celebrity Big Brother's Bit On The Side. He was recently reunited with his old rivals Speidi following their eviction from this year's house.
The reality star turned TV presenter married his partner Dan Neal in 2015 and changed his surname to Clark-Neal.
2013 series two Charlotte Crosby
Reality TV star Charlotte found fame in Geordie Shore where she was mostly known for her drunken antics with her castmates.
But she showed her softer, more caring side whilst in the house proving she was more than just a party animal.
Charlotte was joined by TOWIE's Mario Falcone, Louie Spence, Ron Atkinson and Sophie Anderton.
In 2014 she released her hugely successful fitness DVD 3 Minute Belly Blitz.
2014 Jim Davidson
Comedian Jim was meant to appear in the 2013 series but was arrested at Heathrow Airport after flying in especially from Dubai to be a housemate.
He was taken to a police station and quizzed on suspicion of sexual offences involving two women dating back more than 25 years.
Seven months after the claims were made Jim's solicitor confirmed no further action was going to be taken.
After the nightmare ordeal Jim entered the 2014 house alongside rapper Dappy, Lionel Blair, Luisa Zissman, Evander Holyfield, Jasmine Waltz, Lee Ryan, Linda Nolan and Liz Jones.
Since being crowned the winner Jim has toured with his stage show Sinderella 2 and is set to go on tour with his latest one-man show Charlton Nil this month.
2014 second series Gary Busey
Gary clashed with nearly all of his housemates at one point or another and the hard-of-hearing actor was often branded rude by the others.
The Oscar winner was the first American to win CBB and after flying back to America he appeared on the US version of Dancing With the Stars in 2015.
2015 Katie Price
Katie entered the house halfway through the series after controversial housemates - Ken Morley and Jeremy Jackson - were both forced to leave within the first week after their behaviour.
But Katie wasn't the only motor-mouth of the series and frequently came to blows with namesake and former The Apprentice contestant Katie Hopkins.
The former glamour model is now a panelist on Loose Women and is regularly dogged with rumours and controversy over her marriage to Kieran Hayler.
2015 second series James Hill
Former The Apprentice contestant James was announced the winner of 2015's second series.
He formed a close friendship with fellow housemate Austin Armacost and the pair were in the final together.
Since leaving the house James is still good pals with Austin and released a saucy calendar early this year.
2016 Scotty T
Scotty T was the second Geordie Shore star to enter the house. Before becoming a contestant he was known for his womanising and party ways but whilst in CBB he showed a more compassionate side.
The series was dominated by the rocky romance of Stephanie Davis and Jeremy McConnell and Scotty was often seen consoling the Irish male model.
Stephanie and Jeremy's relationship caused a stir inside and outside the house because the former Hollyoaks actress had a boyfriend.
Since leaving the house Scotty has returned to Geordie Shore and released his biography A Shore Thing 2016.
Stephanie gave birth to a baby boy called Caben-Albi on Friday, January 13. She claims her ex-beau Jeremy is the father but he is insisting on a paternity test.
2016 second series Bear
Ex On The Beach reality TV star Bear - real name Stephen Bear - went into the house to shake things up and was often seen throwing food around the kitchen and winding up his housemates.
He started a relationship with fellow contestant Chloe Khan and the pair got up to some steamy antics - but we won't go into details, most of them are too rude to mention.
When Bear was crowned the winner not all fans were pleased and the viewers watched on as he endured an icy reception from CBB presenter Emma Willis.
Bear now has his own clothing line called East End.
2017 Coleen Nolan
The Loose Women panelist won the first series of CBB 2017, beating singing duo Jedward in the final two. When Emma Willis announced that she was the winner, the 52-year-old burst into tears.
She said: "I’ve never won anything in my life, on my own, ever."
Coleen had previously been on the show in 2012, but admitted it was a lot more difficult the second time round, she said: "They were brutal this time, it was just relentless, there was something every day and it seemed to be always negative. The way some people just left, it was brutal."
2017 second series Sarah Harding
The former Girls Aloud singer took home the crown in August this year. However, not all fans were pleased that the 36-year-old had won, and when she left the house on the finale she was met with a crowd of boos.
But Sarah was as surprised as anyone to have been crowned the champ. Speaking to Emma Willis on the finale night, she said: "I'm just in shock, I can't believe it, it's been a bit of a tough ride."
Singer Amelia Lilly was the runner up of the second series to air in 2017.