Taylor Swift swept the board at the Billboard Music Awards 2015.

Taylor Swift

Taylor Swift

The 25-year-old superstar won eight awards at the ceremony held at Las Vegas' MGM Grand Garden Arena last night (17.05.15), including Top Artist, Top Female Artist and Top Billboard 200 Album for '1989', and said she had "such a good night".

Picking up the Chart Achievement Award, Taylor said: "I wanna shout out of course to Iggy [Azalea] and Meghan [Trainor] because they're amazing, I'm just happy to be in the same category. This is such a good night. What EVEN!"

The 'I Knew You Were Trouble' hitmaker spent the night cuddling up to her boyfriend Calvin Harris - who won Top Dance/Electronic Artist - and also took the Billboard Awards as a chance to show off the star-studded video for her new single 'Bad Blood'.

The video features Lena Dunham, Kendrick Lamar, Oscar nominee Hailee Steinfeld, and models Cara Delavingne and Gigi Hadid, among others, in a Tarantino-and-Sin City-inspired extravaganza.

In the video, Swift recovers from a betrayal by a warrior buddy played by real-life friend Selena Gomez by going into battle training with a crew that includes many of her model friends. Cindy Crawford is also there to give her seal of approval before Taylor marches into battle.

Full list of winners at the Billboard Music Awards 2015:

TOP ARTIST

Taylor Swift

TOP COUNTRY ARTIST

Florida Georgia Line

BILLBOARD CHART ACHIEVEMENT AWARD PRESENTED BY SAMSUNG GALAXY (FAN-VOTED)

Taylor Swift

TOP TOURING ARTIST

One Direction

TOP FEMALE ARTIST

Taylor Swift

TOP RADIO SONG

John Legend, 'All of Me'

TOP MALE ARTIST

Sam Smith

TOP RAP SONG

Iggy Azalea feat. Charli XCX, 'Fancy'

TOP BILLBOARD 200 ALBUM

Taylor Swift, '1989'

TOP DUO/GROUP

One Direction

TOP NEW ARTIST

Sam Smith

TOP BILLBOARD 200 ARTIST

Taylor Swift

TOP HOT 100 ARTIST

Taylor Swift

TOP DIGITAL SONGS ARTIST

Taylor Swift

TOP RADIO SONGS ARTIST

Sam Smith

TOP SOCIAL ARTIST

Justin Bieber

TOP STREAMING ARTIST

Iggy Azalea

TOP R&B ARTIST

Pharrell Williams

TOP RAP ARTIST

Iggy Azalea

TOP ROCK ARTIST

Hozier

TOP LATIN ARTIST

Romeo Santos

TOP DANCE/ELECTRONIC ARTIST

Calvin Harris

TOP CHRISTIAN ARTIST

Hillsong United

TOP SOUNDTRACK

'Frozen'

TOP R&B ALBUM

Pharrell Williams, 'G I R L'

TOP RAP ALBUM

J. Cole, '2014 Forest Hills Drive'

TOP COUNTRY ALBUM

Jason Aldean, 'Old Boots, New Dirt'

TOP ROCK ALBUM

Coldplay, 'Ghost Stories'

TOP LATIN ALBUM

Enrique Iglesias, 'Sex and Love'

TOP DANCE/ELECTRONIC ALBUM

Lindsey Stirling, 'Shatter Me'

TOP CHRISTIAN ALBUM

Lecrae, 'Anomaly'

TOP HOT 100 SONG

Meghan Trainor, 'All About That Bass' - WINNER

TOP DIGITAL SONG

Meghan Trainor, 'All About That Bass'

TOP STREAMING SONG (AUDIO)

John Legend, 'All of Me'

TOP STREAMING SONG (VIDEO)

Taylor Swift, 'Shake It Off'

TOP R&B SONG

Pharrell Williams, 'Happy'

TOP COUNTRY SONG

Jason Aldean, 'Burnin' It Down'

TOP ROCK SONG

Hozier, 'Take Me to Church'

TOP LATIN SONG

Enrique Iglesias feat. Descemer Bueno & Gente de Zona, 'Bailando'

TOP DANCE/ELECTRONIC SONG

DJ Snake & Lil Jon, 'Turn Down For What'

TOP CHRISTIAN SONG

Carrie Underwood, 'Something in the Water'