Taylor Swift kicked off the London leg of her “Eras Tour” Friday in the most British way possible — with a Royal selfie.

In the selfie, the pop star is all smiles while posing with Prince William, Prince George and Princess Charlotte. Also in the picture? Her boyfriend, Kansas City Chiefs star Travis Kelce.

Rumors swirled about the star couple’s romance last summer, and they went public in September when Swift attended a Chiefs game against the Chicago Bears.

“Happy Bday M8! London shows are off to a splendid start,” Swift captioned the selfie, which she posted on X Friday. Prince William’s birthday was also on Friday, according to a post on William and Kate’s official X account.

“USA and UK royalty,” one fan commented on the post.

The royal couple also posted a picture of the Prince of Wales, George and Charlotte with the “You Belong With Me” crooner on their X account.

“Thank you @taylorswift13 for a great evening!” the caption read.

Swift started her first of eight “Eras Tour” shows in London on Friday night to much fanfare.

The official X account for the royal family posted a video of the British Army performing a rendition of Swift’s “Shake It Off” during the June 21 Changing the Guard at Buckingham Palace.

“Can’t stop, won’t stop groovin’,” the royal family captioned the video.