Taylor Swift is joined on stage by supermodel pals Kendall Jenner, Cara Delevingne and Gigi Hadid as she calls in favours for festival headline act
London's Hyde Park was waiting for the arrival of Taylor Swift.
But they got seven for the price of one when lucky British Summer Time festival goers were treated to a surprise appearance from the starlet's gal pals Kendall Jenner, Karlie Kloss, Gigi Hadid, Cara Delevingne, Martha Hunt and Serena Williams.
Having already put on a stellar performance in London's Hyde Park, Taylor concluded in a sequinned show number, surrounded by her gaggle of famous female friends.
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Gilrband: Taylor Swift is joined by Martha Hunt, Kendall Jenner, Serena Williams, Karlie Kloss, Gigi Hadid and Cara Delevingne for London's British Summer Time festival on Saturday night
British star Cara was the only one flying the flag for Great Britain - quite literally - as Taylor and the rest of her American beauties were making their respective fleeting visits to the UK.
Keeping Up With The Kardashians star Kendall was even missing brother-in-law Kanye West's headline performance at Glastonbury to be in town for the appearance.
Kendall had jetted straight in from Paris where she had been walking for Givenchy's Men's Fashion Week SS15 catwalk.
Gigi, meanwhile, was just in California, Karly from New York City and Cara from just about every European destination promoting her new film Paper Towns.
What a show: Taylor and her girlfriends all danced on to stage to accompany the starlet with her song
Flying the flag: Cara Delevingne was the only one flying the flag for Great Britain on the night
You go girl: Tennis ace Serena Williams lead the procession of beauties and gave a twirl
It was perhaps one of Taylor's raunchiest performances to date and she spared nothing on the sex appeal as she leaned provocatively against a door and strutted the stage in high heels.
She changed into two black and white outfits, both consisting over crop tops and tiny shorts, paired with knee high boots and suspenders.
When she kicked off the performance earlier that night, it seemed like the American beauty brought the California sunshine with her too.
She graced the stage as the headline act at British Summer Time festival in aqua sequins and gave her strut some serious girl power in a leggy metallic skirt for the hotly-anticipated performance.
Saucy performer: It was quite a teasing show from the former clean teen
Fabulous figure: The blonde wore tiny shorts and thigh high boots with the ensemble
Looking leggy: She put on a whole show for the Hyde Park audience
Music maker: She returned to her country roots and played with a guitar on her chest
Show stopper: Seen across the skyline, it was an impeccable performance for fans
Raunchy: The former clean teen even enjoyed a moment with one of her dancers
Taylor delivered the show that the crowd had been waiting for when she arrived with an army of male dancers.
Each of them was ready for the sun when they donned white shades against the rays, Taylor setting hers off with a particularly fierce red lipstick.
She razzle dazzled 'em in a Jaded London sequin bomber jacket that added to her iridescent stage image.
Her £26.5million legs were the main event even so, and the blonde put them on full show in a thigh skimming purple mini.
Sex appeal: Taylor wore a tiny black bralet and shorts later that night in a quick outfit change
Shake it off: She was perspiring as she strained under the abnormally high London temperatures
Impassioned: Taylor gave the fans what they wanted, and that was a dedicated sing along
Looking trim: After all that working out, it's little wonder Taylor was looking impeccable
Hair mare: Taylor had some trouble maintaining her tresses as she worked up a sweat
Bad Blood hitmaker Taylor, who is currently on her 1989 world tour, made a pit stop in London for the show that a packed out audience had all been waiting for.
Among the stars in the audience were British fans Emma Bunton and Melanie Chisholm - both of former Spice Girls fame - as well as television presenters Emma Willis and Tess Daly.
As a treat for US star Taylor, the crowd were warmed up by her very good friend Ellie Goulding on the night.
Ellie - who appears in Taylor's most recent music video for Bad Blood - delivered an impassioned performance to get the fans ready, jumping around the stage with high energy.
Bringing the sun: Taylor looked sensational as she arrived in London on Saturday night for a headline performance at Hyde Park's British Summer Time festival
Girl power: The leggy blonde gave her outfit oomph with a red lip and her abs on show
The one they've been waiting for: The packed out crowd were waiting to see the starlet put on a real show
Crowd pleaser: The blonde looked sensational as her male dancers backed her up on stage
The close girlfriends even dined out together before the London performance, hitting Notting Hill on Friday night for a catch up.
Ellie and Taylor would have plenty to talk about, considering Taylor's new relationship with Ellie's good friend and Outside collaborator Calvin Harris.
After a fleeting stay in London, Taylor is off to Dublin this week as she continues to promote her album 1989 with its accompanying sell-out tour.
Backstage with Hermione Granger: Harry Potter star Emma Watson joined Taylor backstage at the show
Taylor recently took pleasure in fighting to have her music made available Apple streaming services.
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Warming them up: Taylor's close friend Ellie Goulding got the crowd ready for the main event
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