Taylor Swift, 2014. Shake It Off, Blank Space, Style. Her full pop arrival.
From Wikipedia
1989 (MCMLXXXIX) was a common year starting on Sunday of the Gregorian calendar, the 1989th year of the Common Era (CE) and Anno Domini (AD) designations, the 989th year of the 2nd millennium, the 89th year of the 20th century, and the 10th and last year of the 1980s decade.