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.

cbb

The Hills stars Heidi and Spencer

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.

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  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Heidi Montag and Spencer Pratt enter the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)

  • Celebrity Big Brother Launch - London

    Heidi Montag arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Heidi Montag arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • MTV's "The Hills Live: A Hollywood Ending" Finale - Arrivals

    HOLLYWOOD - JULY 13: Actor Spencer Pratt appear in costume across the street from MTV's 'The Hills' Live: A Hollywood Ending Finale at The Roosevelt Hotel on July 13, 2010 in Hollywood, California. (Photo by Frederick M. Brown/Getty Images)

  • Celebrity Big Brother Launch - London

    Heidi Montag arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Spencer Pratt arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Heidi Montag and Spencer Pratt are sent to the Big Brother Basement at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Heidi Montag and Spencer Pratt arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Brian Dowling, Heidi Montag and Spencer Pratt arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Heidi Montag and Spencer Pratt arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Heidi Montag and Spencer Pratt arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Claire Richards, Brian Dowling, Neil "Razor" Ruddock, Frankie Dettori and Rylan Clark at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Neil "Razor" Ruddock arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Neil "Razor" Ruddock arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Neil Ruddock enters the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)

  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Neil Ruddock enters the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)

  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Neil Ruddock enters the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)

  • Celebrity Big Brother Launch - London

    Claire Richards arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Lacey Banghard enters the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)

  • Celebrity Big Brother Launch - London

    Claire Richards arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Claire Richards enters the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)

  • Celebrity Big Brother Launch - London

    Claire Richards arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Claire Richards enters the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)

  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Rylan Clark enters the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)

  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Frankie Dettori enters the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)

  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Tricia Penrose enters the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)

  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Tricia Penrose enters the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)

  • Celebrity Big Brother Launch - London

    Claire Richards arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Sam Robertson arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Lacey Banghard, Brian Dowling and Sam Robertson arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Lacey Banghard arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Lacey Banghard enters the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)

  • Celebrity Big Brother Launch - London

    Lacey Banghard arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Lacey Banghard arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Sam Robertson arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Lacey Banghard and Sam Robertson arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Samuel Robertson enters the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)

  • Celebrity Big Brother Launch - London

    Sam Robertson and Lacey Banghard arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Samuel Robertson and Lacey Banghard enter the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)

  • Celebrity Big Brother Launch - London

    Gillian Taylforth arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Gillian Taylforth enters the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)

  • Celebrity Big Brother Launch - London

    Gillian Taylforth arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Brian Dowling and Gillian Tayforth arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Gillian Taylforth arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Gillian Taylforth enters the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)

  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Gillian Taylforth enters the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)

  • Celebrity Big Brother Launch - London

    Ryan Maloney arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Ryan Maloney arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Ryan Maloney arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother Launch - London

    Tricia Penrose arriving at the launch of Celebrity Big Brother 2013, Elstree Studios, Borehamwood.

  • Celebrity Big Brother - Launch Night

    BOREHAMWOOD, ENGLAND - JANUARY 03: Tricia Penrose enters the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Tim Whitby/Getty Images)