Model Paula Hamilton and US reality stars Heidi Montag and Spencer Pratt have joined jockey Frankie Dettori as the first housemates up for eviction from Celebrity Big Brother.
Hamilton, 51, will face the public vote alongside The Hills stars Heidi and Spencer, who entered the Channel 5 show as one contestant, after receiving the most nominations from their fellow celebrities.
Champion jockey Dettori was already up for eviction after four contestants living in the basement were told they had the chance to move to the luxury living quarters upstairs.
In order to do so they had to nominate one of the group to face the public vote. Nominations will be screened on Monday night's episode ahead of the first live eviction show on Wednesday.
Dettori was chosen to face the public vote after his fellow basement dwellers, X Factor singer Ryan Clark, footballer Neil "Razor" Ruddock and actor Sam Robertson, decided he was popular with viewers and therefore more likely to survive the public vote.
As a result of their decision the quartet were freed from living in squalid conditions to join their fellow contestants in the main house. Hamilton was allowed to leave the basement earlier this week after falling ill.
Asked how he felt about being up for eviction, Dettori said: "A little bit scared, but hopefully the British audience will vote for me to stay in."
Clark has been installed as favourite to win the show by bookmaker William Hill, with Dettori next.