Getting serious? Taylor Swift shows PDA at Billboards with Calvin Harris

Chris Pizzello/Invision/AP

Taylor Swift had a historic night at the Billboard Music Awards: The pop star is the most decorated artist in the show’s history with 20 wins, beating Garth Brooks’ 19-win record.

She won eight awards Sunday night at the MGM Grand Garden Arena in Las Vegas, including top artist, and also opened the show with the premiere of her action-filled, star-studded music video for Bad Blood, a song rumored to be about Swift’s friendship with Katy Perry.

Swift’s other wins included top female artist and Billboard 200 album for 1989. She sat in the audience with rumored boyfriend Calvin Harris. Swift kissed the DJ-producer-singer on the cheek and gave him a hug after winning her awards.

Though Swift had an epic open of the Billboard Awards with her video, Kanye West’s closing of the show was tragic. The rapper was booed in Las Vegas when he performed All Day and Black Skinhead. The stage was smoky, and West was hard to see at times.

“And now a doctor,” Kylie Jenner said when introducing her brother-in-law, who earned an honorary doctorate from the Art Institute of Chicago.

Others had a good night though onstage. Iggy Azalea, Pharrell and Sam Smith — who is recovering from vocal cord surgery — won three awards each.

One Direction picked up two awards and gave a shout-out to former band mate Zayn Malik.

Van Halen was the night’s first performance and rocked the crowd with its 1984 hit Panama. The Simple Minds, introduced by Molly Ringwald, performed Don’t You (Forget About Me) from The Breakfast Club, which is celebrating its 30-year anniversary.

Britney Spears sported a sheer black cat suit for Pretty Girls with Azalea; Mariah Carey, who recently launched a Vegas residency, was pitchy when she sang Vision of Love and new single, Infinity, though she ended with a strong high note.

The night had some emotional moments, too: Chris Brown entered the red carpet holding his daughter Royalty; Ludacris offered some words about the late B.B. King; and a teary and shaky Meghan Trainor won hot 100 song and digital song for All About That Bass.

Other double winners included Jason Aldean, Hozier, Enrique Iglesias and John Legend.

“I have to thank, of course, my beautiful co-host [with Ludacris], my lovely wife, Chrissy Teigen,” Legend said when he won top radio song for All of Me. “I am so proud that we won this award together tonight.”