Which one is a better singer?

Aguilera has THE VOICE😱

No one of these

Are you kidding? Christina has the best voice of the century

Christina or Ariana... But I'm listening to Ariana right now.

really?

all of them are good

Christina has one of the best voices I've ever heard. Ariana is cool and sings well, but isn't a rival to Christina. Maybe that'd be Mariah Carey or Beyonce

Wtf does Ariana grande sing?

did anyone see billie joe and Christina on the voice?

Christina is the best. F*** Ariana: