Born and raised in Pennsylvania, Swift moved to Nashville, Tennessee at the age of 14 to pursue a career in country music.
She signed with the label Big Machine Records and became the youngest artist ever signed by the Sony/ATV Music publishing house.
It entered the United States at number three, making Swift the second female artist in the history of the Hot 100 (after Mariah Carey) to debut multiple tracks in the top five in one year; the other was "Today Was a Fairytale" at number two.
It became the fastest-selling digital album by a female artist, with 278,000 downloads in a week, earning Swift an entry in the 2010 Guinness World Records.
At the 52nd Grammy Awards, Fearless was named Album of the Year and Best Country Album, and "White Horse" was named Best Country Song and Best Female Country Vocal Performance.
Swift was the youngest artist ever to win Album of the Year.
It debuted at number one in the United States and the single "Mean" won two Grammy Awards.
"You Belong with Me" was the album's highest-charting single on the Billboard Hot 100, peaking at number two.
Her 2006 self-titled debut album peaked at number five on the Billboard 200 and spent the most weeks on the chart in the 2000s.
The album's third single, "Our Song", made her the youngest person to single-handedly write and perform a number-one song on the Hot Country Songs chart.
Swift made her acting debut in a 2009 episode of CBS's CSI: Crime Scene Investigation, playing a rebellious teenager.
The New York Times noted that the character allowed Swift to be "a little bit naughty, and credibly so".