The fourth Celebrity Big Brother began with a twist - unknown Chantelle from Essex entered the house. She will have to persuade housemates she is a celebrity.
She was joined by entertainer Michael Barrymore, who had been widely tipped to make his TV comeback in the show.
1980s pop star Pete Burns from the group Dead or Alive entered the house in a flamboyant outfit.
Model Jodie Marsh, 27, was greeted with cheers and boos from the crowd outside the house.
Actress Rula Lenska, ex-wife of Minder star Dennis Waterman, has said she wants to be "house mum".
Actress Traci Bingham played a lifeguard in Baywatch and has appeared on a couple of US reality shows.
Goldie Lookin' Chain rapper Maggot was among the pop stars to enter the house...
...joining Preston Samuel, singer with The Ordinary Boys.
US basketball star Dennis Rodman, known for his cross-dressing, joined the housemates...
...including controversial MP George Galloway, who was a surprise entrant.
Former Football Association secretary Faria Alam, known for her affair with England coach Sven-Goran Eriksson, is also a housemate.