Taylor Swift has been in the industry for two decades, but as she turns 34 on Wednesday, she has never been more popular. We take a look at her most polarizing career moments.
Beyoncé and Taylor Swift have never had the rivalry many try to suggest cnn.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from cnn.com Daily Mail and Mail on Sunday newspapers.