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Mentor Cheryl Fernandez-Versini announced before they sang Beyonce's Work It Out that the budding popstar had collapsed behind-the-scenes but insisted on carrying on. "One of my

little dollies, Celina, has passed out and was taken in an ambulance," she said.  "I offered them the opportunity to play the [recording of the] dress run and they wanted to

perform." Celina's illness was not remotely visible while they performed, and all four judges gave them a standing ovation. However, once the music stopped, Celina was visibly weak

and prompted host Olly Murs to rush on-stage to check on her wellbeing. Simon Cowell also leapt to his feet and suggested Celina should go and rest off-camera. The youngest member of the

quartet sat on one of the prop chairs used for the performance, while the judges lavished praise on what they had achieved. Cowell even said that "given the circumstances" it was

one of the best in the show's 12-year history. Cheryl hailed their courage and said: "That is what stars do - we suffer things like this… There's things that you have to just

do and you girls did that tonight." Celina has prompted an outpouring of support online with fans wishing her a speedy recovery. "What an amazing performance!! Absolutely loved

it.. Celina I hope you are ok and feel better soon," one tweeted, while another wrote: "Aww baby Celina, rest well ok! but u all did an AMAZING perf!" _THE X FACTOR RESULTS

SHOW AIRS TOMORROW AT 8PM ON ITV._