Carrie Underwood & Miranda Lambert Perform 'Somethin' Bad' at Billboard Music Awards 2014!

Carrie Underwood and Miranda Lambert hit the stage together for a performance at the 2014 Billboard Music Awards held at the MGM Grand Garden Arena on Sunday (May 18) in Las Vegas, Nev.

The country music superstars debuted their brand new song “Somethin’ Bad” during the show that evening!

PHOTOS: Check out the latest pics of Carrie Underwood

Earlier in the night, Carrie and Miranda hit the red carpet together in different outfits. Make sure to check out those photos if you missed them!

FYI: Carrie is wearing a Christian Benner jacket and tee, YSL boots, a Spragweks belt, and Zadig & Voltaire earrings.

15+ pictures inside of Carrie Underwood and Miranda Lambert performing together…