Taylor Swift holds her awards for Top Female Artist and Top Selling Album during the 2018 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2018 in Las Vegas, United States. [Photo/VCG]

Taylor Swift attends the 2018 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2018 in Las Vegas, United States. [Photo/VCG]

Musical group BTS performs onstage during the 2018 Billboard Music Awards at MGM Grand Garden Arena on May 20, 2018 in Las Vegas, United States. [Photo/VCG]

Ariana Grande performs onstage during the 2018 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2018 in Las Vegas, United States. [Photo/VCG]

Christina Aguilera (left) and Demi Lovato perform onstage during the 2018 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2018 in Las Vegas, United States. [Photo/VCG]

Bruno Mars speaks onstage at the 2018 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2018 in Las Vegas, United States. [Photo/VCG]

Dua Lipa performs onstage during the 2018 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2018 in Las Vegas, United States. [Photo/VCG]

Pharrell Williams (left) and Camila Cabello perform onstage during the 2018 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2018 in Las Vegas, United States. [Photo/VCG]

Jennifer Lopez performs onstage during the 2018 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2018 in Las Vegas, United States. [Photo/VCG]

Jennifer Lopez performs the song Dinero during the 2018 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2018 in Las Vegas, United States. [Photo/VCG]

Recording artist Kelly Clarkson onstage during the 2018 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2018 in Las Vegas, United States. [Photo/VCG]

Recording artists Shawn Mendes (left) and Taylor Swift attend the 2018 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2018 in Las Vegas, United States. [Photo/VCG]

Taylor Swift attends the 2018 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2018 in Las Vegas, United States. [Photo/VCG]

Camila Cabello attends the 2018 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2018 in Las Vegas, United States. [Photo/VCG]

Kesha attends the 2018 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2018 in Las Vegas, United States. [Photo/VCG]