Kelce was clad in a short-sleeved off-white top at the show Sunday 

Swift appeared to include a creative nod to Kelce and his team Sunday when she wore the team's red and gold colors

Kelce at Sunday’s performance sang along to Swift’s song So High School, which is also believed to have been written about him, according to Us Weekly, which reported that she also blew a kiss to her beau before starting the song.

There was a numerical tie-in to playing a song dedicated to Kelce during Sunday's show: The concert was the 87th on Swift's The Eras Tour, aligning with Kelce's football jersey number, 87. Pictured at the Super Bowl in February in Las Vegas

Other famous faces in the audience on Sunday night included actress Jessica Capshaw and singer Christina Milian.

Swift took to Instagram Sunday to thank her fans in Paris for their support amid her series of shows, in which she performed material from her new album for the first time.

Kelce was clad in a short-sleeved off-white top at the show Sunday

‘This post is dedicated to the new Tortured Poets section of the Eras Tour (aka Female Rage The Musical!) and everyone who made these memories so magical,’ she said. ‘To my crew, fellow performers, and band who worked tirelessly in their break to concoct this surprise for you – but mostly for the fans in Paris.

‘I’m so thankful that it was you we got to show this to for the first time because you gave us so much excitement, passion, and love. I’m SO fired up to play this for every crowd on the tour. See you very soon, Stockholm!’

The stars have been supportive of one another in their careers, as Swift was on hand for multiple Chiefs games last fall

Swift’s next stop on her record-breaking tour is Stockholm, Sweden.

Swift revealed during her second night in Paris that she has been working on The Tortured Poets Department segment of her Eras Tour since last year.

The singer took a moment during her show to share details with her attentive audience.

 Cooper and Hadid appeared to be having a great time at the concert in Paris

Gigi Hadid, Bradley Cooper and Travis Kelce watch Taylor Swift