VIDEO: Taylor Swift Premieres 'Shake It Off' Music Video, Announces New Album

Taylor Swift announced her next album, 1989 and debuted the first single from the purely pop collection, today during her Yahoo! live stream. The music video fro the first track, 'Shake It Off,' has already been released - check it out below!

Swift's self-titled debut album in 2006 established her as a country music star. "Our Song", her third single, made her the youngest person to single-handedly write and perform a number one song on the Hot Country Songs chart. She received a Best New Artist nomination at the2008 Grammy Awards. Swift's second album, Fearless, was released in 2008. Buoyed by the pop crossover success of the singles "Love Story" and "You Belong with Me", Fearless became the best-selling album of 2009 in the US. The album won four Grammy Awards, with Swift becoming the youngest ever Album of the Year winner. Swift's third album, 2010's Speak Now, sold over one million copies in its first week of US release. The album's third single, "Mean", won two Grammy Awards. In 2012, Swift released her fourth album, Red. Red's opening US sales of 1.2 million were the highest recorded in a decade, with Swift becoming the only female artist to have two million-plus opening weeks.