Taylor Swift managed to pick up six awards before the Billboard Music Awards even started on Sunday night, so it’s no surprise that she came away from the MGM Grand as the show’s biggest winner.

The pop/country superstar not only took home the most trophies — eight — but also the night’s biggest honors: Top Artist and Billboard 200 Album of the Year for her mega-hit “Red.” In addition to Swift’s

Taylor Swift managed to pick up six awards before the Billboard Music Awards even started on Sunday night, so it’s no surprise that she came away from the MGM Grand as the show’s biggest winner. The pop/country superstar not only took home the most trophies — eight — but also the night’s biggest honors: Top Artist and Billboard 200 Album of the Year for her mega-hit “Red.”

In addition to Swift’s winning spree, the night was full of crazy moments — from Justin Bieber getting booed to Lil Wayne getting a lap dance from fellow performer Nicki Minaj, here’s a look at some of biggest surprises and sour notes of one of the music industry’s biggest nights.

Swift kicked off her much-anticipated performance of her hit single “22” backstage in her dressing room. Dressed in a unicorn T-shirt that made her look more like 9 than 22, Taylor danced her way into a meeting room, whizzed around backstage on an office chair and entered the arena from a side door on a bike.

Pitbull who, like Bieber performed twice during the show, teamed up with a slim and sexy Christina Aguilera to perform their hit single “Feel This Moment.” The pair got the crowd going more than any previous performer (Sorry Beliebers!) When surprise guest Morten Harket of A-ha emerged to sing the signature high-note snippet of 1980s band’s hit “Take on Me,” the entire crowd seemed to be singing along.