Swift performs her latest smash-hit, live in Central Park. WATCH FULL EPISODES: http://abc.go.com/shows/good-morning-america Visit Good Morning America’s Homepage: https://www.goodmorningamerica.com #GMA #TaylorSwift #TaylorSwiftOnGMA #Lover #TaylorSwiftLover #SummerConcertSeries #YouNeedToCalmDown