1989
This might be hard to shake off.
Oh, and Mr. 305 himself made a special visit, too.
Swift also talks about the "fragile" relationship that inspired the song.
Are Harry and Taylor, like, a will-they, won't-they of our time?
WHAT'S HAPPENING
Swift adds another special guest to her 1989 tour.
She's got some serious "Style."
The singer continues her string of impressive celebrity duets.
The singer invited the little pianist to one of her shows.
So how does that "guaranteed saddest version of 'Welcome to New York'" measure up?