Before singing her latest single, Miley dedicated the performance to her friend Ariana Grande and those affected by the Manchester attack on May 22.
It's a showdown of judges against coaches, according to TMZ.
She'll be a coach on 'The Voice' Season 14, not -- as rumored -- on the 'American Idol' reboot.
Blake Shelton and Gwen Stefani overshared on 'The Voice' when the couple pointed out that a contestant sang a song straight off Stefani's 'makeout playlist.'
Blake Shelton played 'dirty' on 'The Voice' when he turned his chair last minute for contestant Enid Ortiz, blindsiding his fellow coaches.
Adam Levine was a 'mad man' during Casi Joy's 'Voice' audition on March 2, when the coach stormed offstage after being 'too exhausted' to get his hopes up.
Kelly Clarkson gushed over 'The Voice' contestant Stephanie Rice's emotional cover of 'Piece by Piece' on Twitter following the show's Season 12 premiere.
Gwen and Blake both bickered and built each other up during the show's Season 12 premiere.
'The Voice' Season 12 coaches teamed up for a gorgeous cover of TLC's 'Waterfalls.'
'I know Gwen very well. I know her career. I know how beautiful she is all the time,' Dion said.