Clarkson was beaming with pride backstage at 'The Voice,' just moments after 15-year-old Cartelli took home the top prize.

For the past 14 seasons, Maroon Five's frontman has been having a ball on the NBC singing competition show. But, Levine says getting him to sign on took some serious convincing by executive producer Marc Burnett.

ET was on the red carpet to speak with Shelton and his fellow 'Voice' coach, Kelly Clarkson. The two also talked Mother's Day plans!

The country singer addressed the now infamous tweet with ET and his fellow 'Voice' coach Kelly Clarkson on Monday ahead of the live show. 'The Voice' airs Mondays on NBC.

ET caught up with Shelton and his fellow 'Voice' choices on Monday, where he opened up about buddy Luke Bryan's Academy of Country Music Awards after-party.

ET caught up with Blake and Kelly Clarkson ahead of the 'The Voice' season 14 live show in Los Angeles. 'The Voice' airs Mondays on NBC.

Stefani appeared on Wednesday's 'Jimmy Kimmel Live' where she revealed her boyfriend's ex was obsessed with her.