You know she loves her London! Taylor Swift kicked off round 1 of her Eras Tour stop in London in style with major surprise appearances, a big celeb turnout and all in the presence of royalty! The singer brought out Gracie Abrams to perform their collaboration track "Us," for the first time. The song is featured on Abrams' latest album The Secret of Us. Swift also saved possibly the biggest surprise for last, bringing Travis Kelce out during a performance of "I Can Do It With a Broken Heart."