Gracie Abrams also joined Swift for a surprise duet of their song ‘Us’ in the weekend’s third and final London show.

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Taylor Swift performed at the third and final night of the Eras tour‘s London stop on Sunday evening, during which a surprise guest joined her on stage: her boyfriend, Kansas City Chiefs tight end Travis Kelce.

Kelce, dressed in a tailcoat and top hat, literally swept the pop star off her feet during the “I Can Do It With a Broken Heart” transition of Swift’s show at Wembley Stadium. He then performed a short routine alongside Swift’s dancers, who were wearing the same attire as Kelce.

That did not mark the end of the special guests during the show, as Swift was soon joined by her friend (and frequent opening act) Gracie Abrams, who joined her for a duet of their song “Us” during the acoustic surprise-songs segment.

“Us” is a song that Swift and Abrams wrote and sang together for the latter artist’s new album, “The Secret of Us,” which came out Friday. Swift began the acoustic segment by singing a substantial part of the number on her own, before taking a pause as Abrams strolled down the long ramp to the B-stage. Swift then talked about the compressed songwriting session that had them coming up with the tune together, before restarting it as a full-on joint performance, with Abrams playing piano while Swift strummed an acoustic guitar.

After Abrams’ departure, Swift then did the other surprise song of the night, an acoustic version of the “1989” favorite “Out of the Woods,” which was briefly mashed up at the end with another track from that album, “Clean.”

Although he didn’t count as an official special guest, Paul McCartney became a trending topic on X when he was spotted and filmed dancing to “But Daddy I Love Him!” on the floor of the arena.

Sunday night marks the last of three shows at Wembley Stadium, though Swift will return to Wembley Stadium in August for five more shows to end the European leg of the Eras tour.

At her first London show on Friday night, Swift took a selfie with Prince William, who celebrated his 42nd birthday at the concert alongside children George and Charlotte.

Several celebrities, including Hugh Grant, Tom Cruise, Liam Hemsworth, Rachel Zegler, Mila Kunis and Ashton Kutcher, attended Swift’s second date of her London stop on Saturday night.

In a post on X, Grant said: “Dear @taylorswift13, You have an incredible show, an amazing and v hospitable team and excellent if gigantic boyfriend (#tequilashots.). Thanks so much from one ageing London boy, wife and thrilled 8 year old #halfgirlhalfbracelet.”