Hayley Kiyoko Is Taylor Swift's Latest Surprise Guest on 'repuation' Tour!

The Boston-area audience at Taylor Swift‘s reputation Stadium Tour got an amazing surprise when the singer brought out Hayley Kiyoko as a surprise guest!

The two stars performed Hayley‘s song “Curious” together during the show at Gillette Stadium on Thursday (July 26) in Foxborough, Mass.

“UM @hayleykiyoko THAT WAS INSANE!! Thank you so much for coming to surprise the crowd tonight at @gillettestadium – THAT WAS SO MUCH FUN!!!! So stoked this was your first stadium performance, and you absolutely killed it 🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉,” Taylor wrote on Instagram along with a video clip.

Taylor has two more shows at the stadium and she added in another post, “So wait… we get to play 2 more nights at @gillettestadium ??! Sounds fake?!? You guys were UNREAL tonight. We can’t wait to see you again, and again after that.”

A few months ago, Taylor02 spoke out to defend Hayley after she was criticized for bringing up the “Delicate” singer in an interview.