"I've been wanting to tell you this for a really long time," Taylor said in a video posted on Twitter.

"I'm really excited. I hope you are too, can't wait to see you, can't wait to see them," the singer added.

The 51-date tour starts in America in May before finishing up in New Zealand in November.



I have a very exciting update to share... @Camila_Cabello and @charli_xcx will be the opening acts on the #reputationStadiumTour!!!

Both Charli and Camila will perform every night of the tour.

Minutes after the news was out, Charli XCX, well known for her cheeky lyrics and antics, volunteered to be the "bad influence" during the get together.



"On every level, this is a dream come true," Camila wrote on Instagram.

"As a fan, I'm going to be singing every song at the top of my lungs. As a friend, it's a GIANT SLEEPOVER."