However, some celebrity spotters may find one particular housemates looks rather familiar - alternative model Sallie Axl.
The tattooed blonde, 26, was photographed just two months ago in a passionate clinch with The Only Way Is Essex star Tom Pearce in London.
Familiar face: Tattooed model and DJ Sallie Axl was the second to enter the Big Brother house
Getting lucky: Sallie with The Only Way Is Essex star Tom Pearce in April
Then then hopped into a taxi together, presumably to get to know each other better.
Making her debut on the new series of the Channel 5 reality show on Thursday night, the bisexual model showed off plenty of her figure and tattoos in her skimpy outfit as she made her way into the house.
Not exactly demure: The DJ showed off her tattoo sleeves and a whole lot of side boob in skimpy ensemble
She also claims to have slept with various celebrities, including footballers... and presumably Tom.
Her housemates have been warned she could be difficult, as she described herself as a 'b**ch'.
She said: 'I get my boobs out in public, because I love it. T**s and tatts that's me'.
Ready to cause trouble: Sallie pulled some interesting poses before going into the house
When someone pointed out Sallie's presence on BB to her former kissing partner Tom on Twitter, he replied: 'Ha ha ;-).'
Meet and greet: Sallie speaks to the first housemates to enter, twins Jack and Joe Glenny
Get a room: Sallie boasted she has slept with several celebrities, one presumably being Tom