AFTER months of speculation, the launch day of this year's Celebrity Big Brother is finally here.

This year's theme - All Stars and New Stars - will see returning faces as well as some fresh ones to make it the most scandalous series yet, with Emma Willis welcoming them all in an action-packed launch.

CBB bosses are so keen to encourage old flames to ignite (or see new romances blossom) that they've even tweaked the house's layout to encourage people to jump into bed together.

So here's the full line-up...

All-Stars

Nicola McLean

14 Nicola McLean is confirmed to be returning to the house Credit: Channel 5

The Sun Online has already revealed the glamour model, 35, is returning to CBB.

She had an explosive row on set with Denise Welch when she first appeared on the show in 2012, which ultimately led to her eviction.

A source told The Sun Online: “Nicola is going back into the CBB house. She’s had the worst two years of her life but now she’s feeling strong and she is desperate to let her hair down and have some fun in there.”

Chances of winning: Sun Bets 33/1

Austin Armacost

14 Austin was pipped to second place on his last appearance Credit: Channel 5

The American model is set to return to the Celebrity Big Brother house after coming second to Apprentice star James Hill in 2015.

The pair’s bromance was the subject of much gossip during that series.

Austin also won praise from viewers after he shaved his head in support of Gail Porter who suffers from Alopecia.

But things are certain to get fiery after he revealed he hates Spencer Pratt and Heidi Montag - who are entering the house with him.

He fumed: “Speidi were a disaster. I hate them – as everyone in America does.”

Chances of winning: Sun Bets 5/1

Coleen Nolan

14 The Loose Women panellist is said to be returning to 'force a trial separation' from her husband Credit: Channel 5

The Loose Women panellist is returning to the CBB house after coming second to Julian Clary in 2012.

She is reportedly re-entering the house in order to force a "trial separation" from her husband, Ray Fensome after the pair admitted they had been having troubles in their nine-year marriage.

Her appearance was guessed ahead of time after fans correctly identified her in a teaser video for this year's series.

Chances of winning: Sun Bets 12/1

Spencer Pratt and Heidi Montag

14 Spiedi are set to cause even more trouble this time round Credit: Channel 5

Spencer Pratt and Heidi Montag were the most controversial housemates ever - and now they are set to ruffle even more feathers now they are back on our screens.

The reality star couple – known as Speidi – have reportedly signed a six-figure deal to come back for another run on the show after the success of their last appearance in 2013, losing out to Rylan Clark-Neal.

An insider told The Daily Star: “Spencer and Heidi are very competitive and they got so close to winning last time that they’re hellbent on coming out on top this time around.

“They’ve never quite lived down being beaten by Rylan. Last time they were not sure what to expect, but they’ve become big fans of the show since their stint in the house."

Though they haven't quite given up their diva demands either.

Chances of winning: Sun Bets 4/1

Calum Best

14 Calum Best will be reunited with a familiar face in the house Credit: PA:Press Association

Calum Best essentially let the cat out of the bag that he will be returning to the Elstree compound during a conversation with the Daily Star Online, telling them he was "coming to London in January to do some work".

When pressed, he just winked and said "no comment."

He added: “I’ve got a lot of time for Celebrity Big Brother, it has done a lot for me.

"If I did go back, I would go on the All Stars team and it would be fun.”

Calum came in third during the January 2015 series of the show, losing out to eventual winner Katie Price and runner-up Katie Hopkins.

Chances of winning: Sun Bets 6/1

James Jordan

14 James Jordan caused a stir during his last appearance for his fiery temperament Credit: Channel 5

James Jordan divided audiences with his feisty nature when he first entered the Big Brother house in 2014, and The Sun revealed he would be returning as bosses know he "won't hold back".

He has signed a six-figure deal in order to appear on the show, only a month after his dancer wife Ola Jordan took on the Australian Outback on I'm a Celebrity... Get Me Out Of Here.

For many, he was the villain of the house - and was evicted to a chorus of boos.

Chances of winning: Sun Bets 8/1

Jasmine Waltz

14 Stunning Jasmine turned up the heat in 2014 - will she find love this time around?! Credit: Channel 5

Model Jasmine Waltz is set to get hearts racing in the latest series of Celebrity Big Brother. Sources confirmed to The Sun she had flown from her home in California to London to prepare for her appearance.

The star became famed for flashing her boobs during her time on the show - as well as a short-lived love triangle romance with Lee Ryan in a love triangel with Casey Batchelor.

She also snogged both former N-Dubz star Dappy and Apprentice star Luisa Zissman in the house Jacuzzi in the 2014 series.

Jasmine was eventually evicted 13 days into the series, with Jim Davidson going on to win.

Chances of winning: Sun Bets 28/1

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New Stars

Stacy Francis

14 Stacy has a complicated history with Ray J Credit: Channel 5

Stacy Francis is an American singer and actress who first came into the spotlight during the US X Factor in 2011. She now runs her own talk show on YouTube, and joined the cast of US show R&B Divas: Los Angeles.

She made headlines in 2012 when it was reported she had an argument with Whitney Houston hours before she died - after Stacy started talking to Whitney's on/off lover, Ray J - who is also entering the house.

Chances of winning: Sun Bets 16/1

Brandon Block

14 The former caner DJ is said to be a changed man Credit: Channel 5

The Sun revealed bosses had secured DJ Brandon Block for the new series - and he's sure to be a fiery personality after becoming known for his wild party lifestyle.

At the height of his career, he stormed the stage at the Brit Awards and got in a furious war of words with Rolling Stones icon Ronnie Wood.

But the DJ, who admitted to spending up to £2,000 a week on his cocaine addiction, is now on the straight and narrow and is using CBB to launch his comeback.

Chances of winning: Sun Bets 20/1

Jamie O'Hara

14 Jamie is following in his ex-wife's Danielle Lloyd's footsteps Credit: Channel 5

The 30-year-old midfielder is following in the footsteps of his ex-wife Danielle Lloyd to enter the famous house.

He is currently without a club after Gillingham FC terminated his contract in September this year after he failed to recover from an injury.

The dad of three needs the CBB payday after being divorced by glamour model Danielle — giving her £15,000 a month as part of their agreement.

Danielle is said to be concerned that he will spill the beans about the split and his ex-wife after the recent beef between her and his fellow housemate Nicola McLean.

Chances of winning: Sun Bets 14/1

Ray J

14 Ray J may have to confront his past once he enters the house Credit: Channel 5

Ray J (real name: William Ray Norwood Jr), became a household name in the States after starring in the TV programme The Sinbad Show in the early 90s.

He later found fame of a different kind in 2007 when a sex tape he made with then-girlfriend Kim Kardashian in 2003 was leaked.

The star is now best known as a rapper after releasing four hip-hop albums (something that runs in the family as he is cousins with Snoop Dogg and his sister is Brandy).

In one of his releases late last year, Ray J slammed his sex tape with Kim K in a diss track, where he spat: "Look at the family, they walk around proud. All because she had my d*** in her mouth."

Chances of winning: Sun Bets 7/1

Bianca Gascoigne

14 What will Bianca say when she sees her ex Calum in the house? Credit: Channel 5

Bianca Gascoigne, the former stepdaughter of football legend Paul, was one of the first stars to sign up to enter this year's CBB.

The 30-year-old is also the ex-girlfriend of another returning CBB star Calum Best, so there are sure to be fireworks.

She’s used to the reality show circuit after appearing in Love Island in 2006.

Chances of winning: Sun Bets 25/1

Angie Best

14 Angie Best will enter the house with her son Calum Credit: PA:Press Association

Angie Best is the mother of CBB All Star Calum Best and ex-wife of late footballing legend George Best.

Originally a bunny girlat London's Playboy Club, Angie's modelling career saw her move to New York City and then Los Angeles where she met George.

After her ill-fated marriage to troubled footballer George, Angie moved to Los Angeles and became a celebrity trainer to the likes of Cher, Sharon Stone and Daryl Hannah.

She later penned numerous books about health, fitness and the menopause, as well as writing her own life story about her six-year marriage to George.

She is also the aunt to EastEnders actress Samantha Womack.

Chances of winning: Sun Bets 20/1

James Cosmo

14 The Game of Thrones actor will enter the CBB house tonight Credit: Channel 5

James Cosmo is best known for his role as Jeor Mormont in Game of Thrones.

The actor, 68, has had a long and distinguished career in television in film. Born in Clydebank, Scotland, in 1948, he shot to fame on TV series Dr Finlay's Casebook in 1965 before going on to star in hundreds of well-known projects.

Starring roles in Highlander, The Chronicles of Narnia: The Lion, the Witch and the Wardrobe and Trainspotting followed making him internationally famous.

Chances of winning: Sun Bets 12/1

And The Sun Online can reveal there will be TWO more housemates entering on Friday.

Catch Celebrity Big Brother, tonight at 9pm on Channel 5.

Got a story? email digishowbiz@the-sun.co.uk or call us direct on 0207 782 4220

Who will win according to Ladbrokes? Ladbrokes have Ray J as the favourite of the confirmed housemates to win at 10/1. Strictly Come Dancing star James Jordan is next at 12/1 alongside footballer Jamie O'Hara, while reality TV couple Speidi areclosely behand at 14/1 with Calum Best. Austin Armascost might have come a close second to James Hill but he's 16/1 to win now. Jasmine Waltz is sitting at 20/1, Bianca Gascoigne and Nicola McClean at 25/1 and Coleen Nolan rounds out at 50/1.