Which songstress is the ultimate diva: Mariah or Celine?

They are complete musical powerhouses, who have dominated the industry for decades and have brought us some of the most iconic and memorable songs/albums of all time. All we want for Christmas is for you to let your heart go on and vote for your favourite! Take a listen to find out if Mariah Carey, and her wonderful whistle notes, or Celine Dion, and her French finesse, will come out on top.