The new album includes a song which interpolates George Michael's Father Figure. The late singer's estate said they were "delighted" when Swift approached them about using it.
"When we heard the track we had no hesitation in agreeing to this association between two great artists and we know George would have felt the same," Michael's estate said on Facebook.
Another song on the album, Actually Romantic, prompted speculation that the song is a diss track about Charli XCX.
But others have played that down, noting that Swift said last year that she was "blown away" by Charli XCX's work, and praised the British star's music as "surreal and inventive".
Here are six other things we learned from Swift's interviews, plus what critics are saying about the album so far.






