Ulrika Jonsson, Ben Adams and Mutya Buena, along with five others, are also participating in the competition series, in which celebrities are sequestered together in a house and monitored 24 hours a day for two weeks, during which time they will be voted out of the house one by one.
The BBC said the first eviction is scheduled for next Friday.
This is the first edition of the show since British television personality Jade Goody made racist remarks to Indian actress Shilpa Shetty in 2007, sparking 54,000 complaints to the BBC.
The show's executive producer, Sharon Powers, said she doesn't expect a repeat of the 2007 incident since this year's housemates have all been warned about what they can and cannot say on the air.
"We have made the rules really clear to them -- what sort of language won't be tolerated and unacceptable behavior," Powers said.
"Frankly, they are not stupid," added producer Phil Edgar-Jones. "They know if they say anything like that, they will be chucked out. We do understand there is a lot of scrutiny of television at the moment. If things are getting out of hand, we will deal with them."