Watch Kelly Clarkson and Ariana Grande face off in epic 'Mixtape Medley' pop ballad battle

Once again Kelly Clarkson and Ariana Grande have blown us away with their powerhouse voices.

This time The Voice judges appeared on Jimmy Fallon’s brand new TV show That’s My Jam and played a round of Mixtape Medley.

The stars each took turns singing some of the most iconic pop ballads in history - including Whitney Houston, Celine Dion, Britney Spears, Shania Twain and Cher - and they crushed each and every one!

Fans were quick to praise the duo on their takes on the pop diva tracks.

"Kelly was fantastic. Ariana was fantastic. Their harmonies were fantastic. I need more of this!" one person wrote on social media.

"I could watch a full hour of nothing but Ariana and Kelly going back and forth singing iconic pop diva hits!" another added.

"Kelly just murdered the last song, she can sing any Whitney's songs effortlessly. Kelly, you are the gem in this industry. Ariana can sing Celine's songs so well too," a third gushed.

While another fan wrote: "Seriously? Kelly sang I Will Always Love You’s most difficult part without changing a breath for almost 15s and sounded perfect? Are you human girl???!!!"

Watch the jaw-dropping video for yourself above!