CAN you imagine Calum Best without his sharp dress sense and groomed style? Or Nicola McLean dressed in camouflaged army gear instead of bright bodycon dresses?
The extreme transformations the Celebrity Big Brother housemates have undergone over the years will have you wondering if that's not an alter ego we're watching in the house...
Bianca Gascoigne 53
Bianca Gascoigne in 1999 with her family, including mum Sheryl Gascoigne, at the Rugrats London premiere Credit: Getty Images - FilmMagic 53
Bianca Gascoigne won Love Island with Calum Best in 2006 Credit: Rex Features 53
Nowadays Bianca is more made-up and wears blonde hair extensions Credit: PA:Press Association Bianca Gascoigne used to sport a more natural look, before finding fame on Love Island in 2006.
Without her bleached mermaid hair the reality star looks remarkably different.
James Jordan 53
James Jordan sporting a long hairstyle before finding fame with his now wife Ola Jordan Credit: ITV 53
The former Strictly dancer's luscious locks are long gone Credit: PA:Press Association The 38-year-old CBB star shared a throwback snap with his now-wife Ola Jordan when he appeared on Loose Women last September.
Before finding fame, the wind-up merchant used to sport a Tarzan look - but we reckon he looks much better these days...
Nicola McLean 53
WAG Nicola used to be a corporal in the army cadets Credit: George Wright 53
The 35-year-old blonde bombshell is barely recognisable in these military shots Credit: George Wright 53
Nicole was 16 at the time these photos were taken Credit: George Wright 53
With her pristine appearance it's hard to imagine Nicola was ever in the army Credit: PA:Press Association It may come as a surprise that 35-year-old WAG Nicola McLean was a corporal with the Camden Detachment of the Army Cadets in north London .
These throwback pictures emerged of the CBB star in full army get-up posing with her gun for the camera.
Jedward 53
Jedward having holy communion long before finding fame on The X Factor Credit: Sourced 53
A year before finding fame, the twins queued up for an autograph from Mundy at a HMV store Credit: Sourced 53
The twins are now known for their over-the-top bleached quiffs which they carefully style daily in the CBB house Credit: PA Twins Jedward became the infamous joke act on The X Factor in 2009.
But the inseparable pair haven't always sported such eye-catching hair styles...
Jasmine Waltz 53
Jasmine Waltz looks unrecognisable in photos taken just seven years ago Credit: Splash News 53
Jasmine was already a natural beauty, but looks startlingly different now Credit: Splash News 53
Before being evicted by her fellow housemates, Stacy Francis slammed Jasmine for her 'fake face' Credit: Splash News The American reality show regular Jasmine Waltz looks amazingly different in modelling snaps taken just seven years ago.
The 2010 photoshoot shows her flaunting a more natural look.
Heidi Montag 53
Heidi Montag was a naturally pretty girl Credit: Rex Features 53
When Heidi first starred in reality series The Hills, she had more of a girl-next-door look Credit: Rex Features 53
Heidi has now had several procedures to change herself, including several boob jobs Credit: Getty Images Heidi Montag first found fame on the American reality TV series The Hills.
Despite being naturally very pretty, she has undergone several procedures to change her face and body.
Spencer Pratt 53
Spencer looks cute and innocent in this throwback snap with his sister, fellow reality TV star Stephanie Pratt, and another female relative Credit: Instagram 53
Fresh-faced Spencer during the early days on his time on The Hills Credit: Wikipedia 53
More recently, Spencer sported a much less preened look in 2010 - around the time he was arrested for possessing illegal firearms Credit: Fame/ Barcroft Media 53
Spencer is acting as one CBB contestant with his wife, Heidi, and the pair are known as Speidi Credit: PA:Press Association Spencer Pratt became the most hated star of The Hills after fans blamed him for breaking up Heidi and Lauren Conrad's friendship.
It's hard to imagine the innocent looking lad in his throwback snap could become such a master manipulator...
Coleen Nolan 53
Coleen Nolan (far right) was the youngest member of the Irish family girl group The Nolans Credit: Alamy 53
The Nolan sisters appearing on the Morecambe and Wise TV show in 1974 Credit: Alamy 53
Now Coleen is best known for co-presenting panel show Loose Women Credit: PA:Press Association Coleen Nolan first rose to fame as the youngest member of girl group The Nolans.
Four of the sisters reformed in 2009 for a UK tour but Coleen is now best known for her role on Loose Women.
Calum Best 53
Calum as a baby being fed by his late father and iconic footballer George Best Credit: Scope Features 53
In his younger years, Calum modelled for River Island Credit: River Island 53
Calum used to sport a curly blonde mop of hair Credit: River Island 53
Few people will remember these River Island campaign shots Credit: River Island 53
Nowdays the reality TV star has all the girls in the house fighting over him Credit: PA:Press Association Son to famous footballer George Best and axed fellow-CBB contestant Angie Best, flirty Calum has all the girls' attention in the house.
His carefully-preened look and sharp dress sense is a far cry from his bad boy image in the early days.
Angie Best 53
Angie when she was 29 years old with then-husband George and three-year-old Calum Credit: PA:Press Association Archive 53
Angie posing with a young Calum Credit: Rex Features 53
Angie, 64, became the first housemate to be evicted from the new series Credit: PA:Press Association Angie Best surprised her son by entering the new series of Celebrity Big Brother alongside him.
Their close relationship was clear for everyone to see and these cute throwback pics will melt your heart.
Jamie O'Hara 53
Jamie O'Hara playing for Tottenham Hotspurs against Charlton Athletic Credit: PA:Press Association 53
Jamie with his ex-wife Danielle Lloyd in 2009 at the UK premiere of 'Transformers: Revenge of the Fallen' Credit: Getty Images - WireImage 53
Jamie is in between clubs at the moment and has certainly grown up since his early days playing for Spurs Credit: PA:Press Association Footballer Jamie O'Hara is best known for his marriage to and acrimonious split from Danielle Lloyd.
Since stepping into the house, he hasn't held back about his ex-wife - and she has spoken out several times to defend herself from his accusations.
Chloe Ferry 53
Chloe Ferry when she first appeared on reality show Geordie Shore
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Outspoken Chloe is already making a splash in the house Credit: Array Reality TV star Chloe Ferry has been open about the work she's had done and recently admitted to having spent £50,000 on her face .
It's no wonder she looks like a different person these days...
Kim Woodburn 53
Kim Woodburn with her half brother Robert, and elder sister Gloria in 1947 Credit: Sourced 53
Kim's straight-talking nature has already landed her in some hot water in the house Credit: Channel 5 Kim Woodburn, 74, is best known for her role in Channel 4's How Clean Is Your House? but the TV host was a looker in her youth and also tried her hand at modelling.
In the house, she's proving to be unpopular with some fellow housemates for her outspoken rants.
Ray J 53
A fresh-faced Ray J with his musician father Willie Norwood in 2005 Credit: WENN 53
Ray J with Kim Kardashian in 2005: It was ultimately their leaked sex tape that gained him notoriety this side of the Atlantic Credit: WENN 53
Ray J was forced to leave the CBB house to receive medical treatment Credit: PA:Press Association Ray J is an artist from a musical family, but is best known in the UK for his infamous sex tape with Kim Kardashian.
He was dismissed as dull in the house because he spent the majority of his time asleep, but it was later revealed he had to leave after 'blacking out from extreme pain'.
James Cosmo 53
James Cosmo's first big role was in Battle of Britain Credit: Sourced 53
Now the Hollywood actor is best known for his role in Braveheart and Game of Thrones Credit: PA:Press Association James Cosmo gained prominence later in his career and looks almost recognisable from his days in Battle of Britain, released in 1969.
He's not the most dynamic housemate but his fellow contestants all agree he is the most respected.
Stacy Francis 53
Stacy Francis appeared in Phil of the Future in 2004 before auditioning on The X Factor USA Credit: Phil of the Future 53
Stacy Francis auditioned on The X Factor USA in 2011 Credit: Splash News 53
Stacy has rubbed some people up the wrong way in the house with her frank nature Credit: PA:Press Association Stacy Francis first found fame on The X Factor USA and became known in the UK after reportedly having a fight with Whitney Houston a few days before her death.
What most people don't know if that she'd actually already had a role on American science fiction sitcom Phil of the Future.
Austin Armacost 53
Fresh-faced Austin before appearing in Celebrity Big Brother Credit: Sourced 53
The first time he appeared in Celebrity Big Brother Austin was a runner-up, but he didn't last long in the new series Credit: PA:Press Association Austin Armacost is an American reality TV star best known for starring in The A-List: New York.
His spell in this season's Celebrity Big Brother house was his second, but this time around he was forced out early on in a shock eviction .
Brandon Block 53
Brandon Block's DJ career started out in 1985 Credit: Getty Images 53
Brandon is most famous for crashing the stage heavily intoxicated at the 2000 BRIT Awards Credit: PA:Press Association Wire 53
Brandon quit the show early on Credit: PA:Press Association British DJ Brandon Block entered the CBB house after a long spell out of the limelight.
He didn't last long in the house, though, and quit one day after rapper Ray J left.