The pair performed together at the 'Eras Tour' last week on Carpenter's "one day off"
Albums from Olivia Rodrigo and Ariana Grande have also been given a 'Dress To Impress' reworking
"It's been stuck in my head," Swift told the crowd
"Headlining Primavera Sound next year with Sabrina and Chappell. Finally, holy trinity unlocked," wrote Charli
Charli XCX, Chappell Roan, Sabrina Carpenter, LCD Soundsystem, FKA Twigs, HAIM, Fontaines D.C., Beach House, IDLES and more are all on the stacked line-up for the 2025 edition of the Barcelona festival
“I've never fallen in love at a concert before, but stranger things have happened”
The actor attended two of her concerts over the weekend
This marks the eighth time the EMAs have been held in the UK
Eilish also touched on the downsides of fame, recalling a period where she thought she'd "never feel like a person ever again"
Fans can get a taste of the new routines before the game launches later this month