As she launched her massive (85 date!)
1989 World Tour, she brought out 101 surprise guests for her fans.
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Credit: Kevin Mazur/LP5/WireImage
But we know the Grammy winner has a knack for making the impossible seem effortless.
Heres how the squad assembled.
Those asks were sometimes made months in advance, according to a source.
In OMIs case, it was requested that he sing Cheerleader.
(Its natural because its my first single, he says.)
Swift is focused on the show, but she never neglects her guests.
Even for pros, the experience is surreal: Sixty thousand is my biggest crowd, says Andy Grammer.
Ill remember sold-out Soldier Field forever.
Count Nelly, who has performed with Swift on her last three tours, among her squad.
Taylors like a little sister, Ive known her almost her whole career, he says.
It was my pleasure.
Her and the Nell-ettes Haim came up with thiswhole routine for Hot In Herreon their own.
Nick Jonas says of his invitation to perform his hit Jealous.
I was like, Um, yeah!'
QUIZ:Which Taylor Swift BFF are you?
I was in the shower when I got the news and almost slipped and broke my neck!
Additional reporting by Jessica Goodman, Kevin ODonnell, Marc Snetiker, and Tim Stack.