Following the public vote, the girl group - put together by Simon Cowell - ended up in the bottom two acts with a weeping Katie Waissel.
The sing-off ended in deadlock with Simon and Louis Walsh voting to keep in Belle Amie and Cheryl Cole and Dannii Minogue choosing to save Katie.
Host Dermot O'Leary explained that the viewers' poll would decide the matter and it was Belle Amie who lost out.
Esther Campbell, Rebecca Creighton, Sophia Wardman and Geneva Lane will now have to decide if they want to stick together or try for stardom again as solo performers.
Where to next?- X Factor 2010 contestants
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