Billboard Music Awards: Taylor Swift Named Top Artist (Video)

"This is such a good night," said Swift after taking the stage to accept one of her many awards of the night.

Taylor Swift capped her multi-award-winning Billboard Music Awards Sunday night by taking home the top prize: top artist.

Swift took home eight awards after kicking off the Las Vegas show with the world premiere of the star-studded music video for her latest 1989 single, "Bad Blood."

In her speech, the pop star explained that before jetting to Vegas, she watched her brother, Austin, graduate from the University of Notre Dame on Sunday morning.

"To anyone who's graduating this year from high school, college, whatever this is for you, congratulations," said Swift. "This is kind of a graduation for us because it honors what we've achieved, but it also reminds us that we have so much more learning to do. We have so much more to accomplish and so much more to fight for."

Swift, who addressed her fans in several of her speeches Sunday night, ended the night with one last appeal to them, telling them she "loves" them and would see them on the 1989 tour.

Swift faced off against the night's second-most-nominated artist, Sam Smith, in the top artist category, with Swift emerging victorious. Swift went into Sunday night's show nominated for a leading 14 awards. Smith was nominated for 13 prizes. The other three nominees in the top artist category were Ariana Grande, One Direction and Katy Perry.

The Billboard Music Awards are based on album and digital-song sales, radio airplay, streaming, touring and social media interactions — measurements that are tracked year-round by Billboard and its data partners, including Nielsen Music and Next Big Sound. The awards are based on the reporting period from March 10, 2014, through March 8, 2015.

The Billboard Music Awards, co-hosted by Ludacris and Chrissy Teigen, aired live from the MGM Grand Garden Arena in Las Vegas on ABC at 8 p.m. ET.