United Kingdom, Dec. 12 -- Taylor Swift broke down in tears in her new documentary as she spoke about the Southport stabbing and Vienna terror plot during her Eras Tour.

The music mega star gets emotional in the first episode of the Disney+ series The End of an Era as she reflects on a foiled terror plot at her Vienna concert and the "horrible" deadly stabbings of three of her young fans in Southport, UK, last year.

Taylor says in the documentary: "It's just kind of a weird feeling going into these last five shows in Europe.

"We've done, like 128 shows so far, but this is the first one where I feel like I'm skating on thin ice or something. We've had a series of very violent, scary things happen to the tour - like, we dodged a massacre...