PRINCE William and his kids posed for a selfie taken by Taylor Swift at the pop star's concert last night.
The Prince and Princess of Wales' Instagram account posted the adorable snap, which also features Prince George and Princess Charlotte, this afternoon - after the future King was seen dad dancing at the gig.
The dad-of-three was celebrating his 42nd birthday.
The Instagram post said: "Thank you Taylor Swift for a great evening!"
Swift herself also shared a cute snap she took after the gig with William, George, Charlotte and her American football player boyfriend Travis Kelce.
She wrote: "Happy Bday M8! London shows are off to a splendid start."
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George, 10, looked like the double of his dad in a blue buttoned Ralph Lauren shirt and jeans, while Charlotte, nine, beamed at the camera in a sparkly top.
Swift, 34, kicked off the UK leg of her The Eras Tour at Wembley Stadium in front of 89,000 fans on Friday.
Footage was also posted on social media showing William dancing in the crowd among thousands of roaring Swifties.
He was seen - dressed in a buttoned down shirt and blazer - swaying his arms as he got into the music on the terrace.
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The video, filmed by someone on a lower tier, shows Swift on the stage in the distance as she performs Shake It Off before panning round to William shaking his arms and torso.
A post of it on X adds: "Prince William being a 1989 girlie is taking me OUT."
Other royal fans hailed Wills for his moves, one wrote: "Loving the enthusiasm! Taylor really is for everyone. Haha!!"
"He’s a Prince but he’s a King for that," added another.
"Now he's got some moves," agreed a third.
Someone else praised: "He just living his best life!"
William was spotted in the crowd for England's drab 1-1 draw with Denmark in Germany on Thursday in Euro 2024.
Yesterday, wife Princess Kate posted a snap of her husband with their kids on a beach, adding "We all love you, Papa" to mark his birthday.
William previously shared the stage with Swift at Kensington Palace in 2013 to perform Livin' On A Prayer by Bon Jovi for a charity event.
He later said he obeyed "like a puppy" the singer's request for him to join her.
He revealed in a 2021 interview: "I can't believe I'm actually telling you this story - I turn up and Jon Bon Jovi and Taylor Swift are at the event, which nearly knocked me off my feet.
Kate's sweet snap of William and kids shared to mark birthday
Princess Kate shared a sweet snap yesterday morning of Prince William with their children to mark his 42nd birthday.
The royal, also 42, posted a never-before-seen picture of Wills and their adorable little trio on a beach outing.
The fun action shot shows Princess Charlotte, Prince Louis and Prince George holding hands as they leap from a sand dune.
Kate wrote a heartwarming message alongside the snap, which she took herself, it read: "Happy birthday Papa, we all love you so much! Cx"
It was uploaded on The Prince and Princess of Wales' official Instagram account.
It appears to be from a beach in Norfolk, where the family have their country home.
The Princess shared a heart-warming picture of William with the kids at a similar setting on Father's Day.
Meanwhile, the Royal Family shared an adorable baby photograph of William in King Charles' arms.
The Monarch, 75, shared a heartwarming picture showing the prince perched on his lap as a tot.
In the touching black-and-white snap, Charles looks lovingly at his son, who is also brimming with joy.
"And then, I went inside, met everybody, a lot of handshaking to do those nights, a lot of chatting. I try and be charming and interactive.
"She puts her hand on my arm, looks me in the eye and says: 'Come on, William - let's go and sing'."
He added that he was "cringing" just recalling the incident.
Earlier on Friday, the Buckingham Palace band performed a rendition of Swift's 2014 hit Shake It Off to mark her tour arriving in the city.
Among the other attendees at the concert were Labour leader Sir Keir Starmer and his wife Victoria.
The politician, who is currently ahead in the polls to take over as Prime Minister on July 4, posted on X: "'Swift' campaign pitstop."
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Swift told the 89,000-strong crowd: "Oh my God, London, look what you've done. What better way to spend a Friday night than in the most exhilarating city in the world?"
Friday night's concert was the first of three sold-out dates at Wembley, with the international sensation returning in August to perform another five.