"shake it off" is a song by american singer-songwriter taylor swift. it is the first single from her fifth studio album, "1989". it premiered during a yahoo! live stream on august 18, 2014. the song's music video was released was also released on the same day. the music video helped the song to debut at number one on the "billboard" hot 100. it was ranked number 13 in the year-end hot 100 of 2014.