Taylor Swift - The Band Perry
Taylor Swift and The Band Perry performs at Bankers Life Fieldhouse on Sept. 16, 2015 in Indianapolis, Ind.  Michael Hickey—LP5/Getty Images

Watch Taylor Swift Sing 'If I Die Young' With The Band Perry

Sep 17, 2015

Taylor Swift continued her 1989 World Tour with another guest star in Indianapolis when The Band Perry joined her on stage.

https://twitter.com/taylorswift13/status/644375983936700416?ref_src=twsrc%5Etfw

Swift sang the hit song "If I Die Young" and posted a clip to Twitter and Instagram. The band was also excited to be there, calling it a "magical night."

https://twitter.com/thebandperry/status/644345108079509505

They weren't the only stars in attendance, though. The Fault In Our Stars author John Green broke his recent "no social media" rule to reveal that he was in the audience, too.

The Band Perry joins a trove of other celebs who've joined Swift on her world tour, including Wiz Khalifa, Justin Timberlake, Julia Roberts, John Legend and many more.

PHOTOS: See Taylor Swift Over the Years

2006 CMT Music Awards - Arrivals
Taylor Swift arrives at the 2006 CMT Music Awards at the Curb Event Center at Belmont University in Nashville, Tennessee.John Shearer—WireImage/Getty Images
2006 CMT Music Awards - Arrivals
2007 CMT Music Awards - Red Carpet
42nd Annual Academy Of Country Music Awards - Show
2008 ACM New Artists Party For A Cause
Taylor Swift and Michelle Williams Visit MTV's "TRL" - June 16, 2008
The 42nd Annual CMA Awards - Arrivals
CNN Heroes "An All-Star Tribute" 2008
Saturday Night Live
The Brit Awards 2009 - Arrivals
44th Annual Academy Of Country Music Awards All-Star Jam
Taylor Swift in Concert
2009 MTV Video Music Awards - Arrivals
The 43rd Annual CMA Awards - Show
The 52nd Annual GRAMMY Awards - Show
Taylor Swift drops one of her awards dur
Taylor Swift 13 hours on the 13th. & some songs
Grand Ole Opry 85th Birthday Bash
44th Annual CMA Awards - Show
taylor Swift attends the 'Alexander McQu
2012 MTV Video Music Awards - Show
BBC Radio 1 Teen Awards - Show
BBC Radio 1 Teen Awards - Show
Taylor Swift Switches On Westfield London Christmas Lights
26th Annual ARIA Awards 2012 - Arrivals
26th Annual ARIA Awards 2012 - Show
KIIS FM's Jingle Ball 2012 - Night 1 - Show
Taylor Swift At Gillette Stadium
2013 Victoria's Secret Fashion Show - Show
Taylor Swift Lives In Shanghai
2014 American Music Awards - Show
2014 American Music Awards - Roaming Show
The Voice - Season 7
2014 Victoria's Secret Fashion Show - Show
KIIS FM's Jingle Ball 2014  Powered by LINE  - Show
Taylor Swift arrives at the 2006 CMT Music Awards at the Curb Event Center at Belmont University in Nashville, Tennessee
... VIEW MORE

John Shearer—WireImage/Getty Images
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