X Factor final viewers left confused as Becky Hill performs with finalists as fans think she's a random contestant during group song

X Factor: Becky Hill sang during the live final [ITV]The X Factor viewers were treated to a group performance as the live 2017 final kicked off, but no one seemed to know who the guest performer was. Becky Hill, a singer who found fame on The Voice UK, took to the stage to sing a rendition of Bring It Back by Moloko.As Grace Davies, Rak-Su and Kevin Davy White joined her on stage some fans couldn’t work out who Becky was – or if she was another contestant.They must ...