Scottish singer Lulu joined Take That on stage at Hyde Park at the weekend.
The To Sir With Love singer appeared to join in on the boys' BST set on Saturday, July 1.
The Back For Good hitmakers were confirmed as one of the London music festival’s headline line-up last year alongside both The Script and Sugababes.
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Lulu announced the appearance on Facebook, writing: "Show ready ...here we go".
She also posted a picture and caption on Instagram tagging Take That.
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Attendees at the show seemed to love the special visit.
One fan wrote on Lulu's Instagram post: "You were fabulous! 🔥🔥"
While another commented: "You looked fab and sounded amazing. My mum and I loved seeing you tonight."
K-pop band BLACKPINK will take the Hyde Park stage today.
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