Travis Kelce received warning before meeting Prince William at Taylor Swift show

Travis Kelce once described what it was like hanging out with royalty at Taylor Swift's 'Eras Tour'.

Swift kicked off 2023 with a bang when her 'Eras Tour' began, with the singer travelling around the world performing to Swifties everywhere.

During a performance at Wembley Stadium in London, audience members were pleasantly surprised when Kelce made an appearance on stage during a rendition of her hit song, 'I Can Do It With a Broken Heart'.

But this wasn't just any audience that night, as royalty was among the crowd.

Yes, Prince William was in attendance with his two children, Prince George and Princess Charlotte, whom he shares with his wife, Kate Middleton.

After the show, the couple met up with the Prince of Wales and his family. Kelce, whose birthday is on October 5, described his experience of meeting British royalty on his podcast, New Heights, which he co-hosts with his brother, Jason.

Taylor Swift and Travis Kelce had one hell of a turnout for her Eras Tour (TheStewartofNY/GC Images)

He said: "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."

The Kansas City Chiefs tight-end described the Prince of Wales as the 'coolest motherf**ker' and 'so cool'.

Jason then chimed in: "He was awesome. He was a good dude."

Travis continued: "He was there with little George and Charlotte, and they were an absolute delight to meet.

"I wasn't sure if I was supposed to bow to them - courtesy [or] just be an American idiot and shake their hand. We wanted to be polite, especially on this side of the pond."

Jason, who is the former Philadelphia Eagles Centre, then revealed that they actually received a 'warning' beforehand, since they didn't know the 'actual [etiquette]'.

Travis spilled all about meeting Prince William. (Instagram/@taylorswift)

He continued: "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."

He concluded: "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."

Since then, Taylor and Travis's relationship has progressed significantly, with the pair announcing their engagement on Instagram in August.

But as fans wait for the wedding of the century, they've also got the 35-year-old's upcoming album to look forward to.

She made a rare appearance on her fiancé's podcast, where they also talked about their life 'behind closed doors', to announce that she would be releasing her new studio album, 'The Life of a Showgirl', in October, with the scheduled release date being 3 October.