TAYLOR Swift's boyfriend Travis Kelce has lifted the lid on meeting Prince William with his kids George and Charlotte.
He called the heirs to the throne "an absolute delight" after taking a selfie with the Royals backstage at Wembley Stadium last weekend.
Travis and his brother Jason spoke about the Eras Tour meeting on the latest episode of their podcast New Heights today.
He admitted he thought the prince was "so cool" but he didn't know how to address him.
Travis said: "I wasn't sure if I was supposed to bow to them, curtsy or just be an American idiot and shake their hand."
Prince William took his eldest children George and Charlotte to Taylor Swift's Eras Tour concert at Wembley Stadium on Saturday night.
Read More On Taylor Swift
William, who was celebrating his 42nd birthday, posted a selfie with the global superstar the next day with the caption: "Thankyou Taylor Swift for a great evening!"
Swift also shared a cute snap she took after the gig with William, George, Charlotte and her American football player boyfriend Travis.
She wrote: "Happy Bday M8! London shows are off to a splendid start."
George, 10, grinned in a blue buttoned Ralph Lauren shirt and jeans, while Charlotte, nine, donned a sparkly top for their big night out.
Most read in Royals
Footage posted online showed William dancing in the crowd among thousands of fans as Swift sang her hit Shake It Off.
Travis told his podcast listeners: "We met royalty, guys. There was royalty at the show. I got there early and got to meet Prince William. How bout that? Your Royal Highness."
His brother Jason added: "He was awesome. He was a good dude."
Travis claimed he was given a warning ahead of the meeting.
He said: "Because we weren't at an elegant, official royal event, we didn't have to bow. "If it would've been an official meeting-of-royalty event, then it would have been that."
Travis joked he'd never seen his brother more respectful, saying he saw Jason put his beer "ten feet away".
Jason added: "They were wonderful people, and that's what it's about. They're part of a monarchy [it's] hard to be a down-to-earth human being - I would assume. But [they] came off that way completely."
The brothers gushed over "superstar" Princess Charlotte's "fire", revealing she was full of questions.
Travis praised William and Kate's parenting, added of Charlotte: "She had fire to her. She was asking questions… I love it when parents ask their kids to be present, be vocal… Encourage them to take a lead in the conversation."
Kate's sweet snap of William and kids shared to mark birthday
Princess Kate shared a sweet snap 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.