The blonde beauty took home the biggest prize of the night at the Nokia Theatre in Los Angeles, bagging Artist of the Year, as well as Best Female Artist and Best Album for 'Speak Now' in the Country Music category, which saw the 'Love Story' hitmaker praise her fans and friend Selena Gomez.
She told the crowd the feat was "one of the most amazing things that has ever happened to me".
British singer Adele also picked up a triple win, with gongs for Favourite Female Artist and Favourite Album for '21' in the Pop or Rock Music category, as well as Favourite Artist in the Adult Contemporary Music section.
Katy Perry took home a special award for being the first female pop star to have five number one singles from one album - which she managed with her 'Teenage Dream' record - and Nicki Minaj secured a double win by claiming Favourite Artist and Favourite Album for 'Pink Friday' in the Rap/Hip-Hop music section.
American Music Awards (AMAs) winners:
Artist of the Year: Taylor Swift
Pop or Rock Music:
Favourite Male Artist: Bruno Mars
Favourite Female Artist: Adele
Favourite Band, Duo or Group: Maroon 5
Favourite Album: Adele - '21'
Favourite Male Artist: Blake Shelton
Favourite Female Artist: Taylor Swift
Favourite Album: Taylor Swift - 'Speak Now'
Favourite Band, Duo or Group: Lady Antebellum
Favourite Artist: Nicki Minaj
Favourite Album: Nicki Minaj - 'Pink Friday'
Soul/Rhythm & Blues Music:
Favourite Male Artist: Usher
Favourite Female Artist: Beyonce
Favourite Album: Rihanna - 'Loud'
Alternative Rock Music:
Favourite Artist: Foo Fighters
Adult Contemporary Music
Favourite Artist: Adele
Sprint New Artist Of The Year: Hot Chelle Rae
Favourite Artist: Jennifer Lopez
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