Roger Federer enjoys Taylor Swift's Eras Tour with family in Zürich

The tennis pro, 42, was seen with his wife Mirka and their four children — twin girls Myla and Charlene, 15, and twin boys Leo and Lenny, 10 — at Taylor Swift's Eras Tour stop in Zürich, Switzerland, on Monday, July 8. 

The proud dad later showcased the dozens of friendship bracelets stacked on his wrist on his Instagram Stories the following day.

An Eras Tour fan account on X shared a photo of the couple smiling with their arms around each other in the crowd, alongside Federer's picture of his bracelet collection. 

"Roger Federer attended Night 1 of Taylor Swift's 'The Eras Tour' in Zürich, Switzerland! #ZurichTSTheErasTour," captioned the post. 

Another X user also spotted the Federer family at the concert, posting a zoomed-in photo of them in the audience.

In June, Federer told PEOPLE that attending Swift's concert with his kids was a summer goal. 

"We went to a lot of concerts last year," he said, recalling the fun of getting on stage with Coldplay at their Zürich show last summer. 

"I didn't sing, I just played a little shaker thing," he laughed. 

"But we also saw [Bruce] Springsteen twice, and Elton John. This summer Taylor Swift is coming to Switzerland so of course we'll go to that, and ACDC too."