The Labour leader made a "swift" pitstop for the first night of the London leg of the American pop star's record-breaking Eras tour.

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Swift is performing three gigs in the capital this weekend - before returning to the venue in August for a further five.

Sir Keir posted a picture alongside his wife Victoria on X with the caption: "Swift campaign pitstop."

Referring to some of Swift's song titles, fans joined in on the puns including: "Change (Keir's Version)" and "I Can Fix The Country (No Really I Can)".

Others quipped that the PM hopeful was "about to 'shake off' 14 years of Tory chaos" and that it had been a "Cruel Summer" for his political opponent Rishi Sunak.

Sir Keir, currently 20-points ahead in the polls, has previously spoken about his love for music, naming Northern soul among his favourite genres, though he recently told The Financial Times that rapper Stormzy's last album is "my favourite album at the moment".

The Labour leader was not the only famous face in attendance at Swift's concert.

The singer was supported by her NFL boyfriend Travis Kelce, while Bridgerton star Nicola Coughlan and model Cara Delevingne were reportedly among the star-studded crowd.

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In pictures: Taylor Swift's opening Wembley show

Swift will return to the 90,000-capacity venue on Saturday evening and Sunday before moving on to mainland Europe, coming back to Wembley for another five dates in August.

Londoners have waited more than a year for the show to arrive after she kicked off her marathon string of dates in Glendale, Arizona, in March 2023.

She played three sold-out shows at Murrayfield Stadium in Edinburgh earlier this month, followed by three at Anfield Stadium in Liverpool and one night at the Principality Stadium in Cardiff.

Taylor-mania has taken hold of London in recent days, with the city's iconic Tube map redrawn to celebrate her arrival.

Swift-fever even spread to Buckingham Palace earlier on Friday where Shake It Off was played at the traditional Changing of the Guard ceremony.

It was revealed on Thursday that Swift's fans were expected to boost the London economy by £300m as the capital hosts more Eras Tour shows than any other city in the world, with nearly 640,000 people expected to attend across the eight dates.