[PHOTO] BEHIND THE SCENES OF 'THE VOICE': SIA FURLER, REBA MCINTIRE, MONICA, + OTHERS

Editor's Note:

Christina and Sia have such an effervescent kinetic energy when they are together! Sia is really sweet too and pointed us out, repping for Christina. We DEFINITELY repped for Sia too. "We're bound to you, Christina & Sia!" & "Clap Your Hands for Sia!" haha It was cute.

Source: TheVoice