Kevin Costner Is 'Officially a Swiftie' After Taylor Swift Concert

Kevin Costner is officially a Swiftie!

The Yellowstone alum is clearly one dedicated dad, having either dove headfirst into the great war against Ticketmaster or splurged on practically extortion-level resale tickets, in order to bring his daughter, 13-year-old Grace, to Taylor Swift's Eras Tour.

The two jammed together all night, and he walked out of the set a fan in his own right.

The two sat in the lower bowl directly parallel to the main stage—nearly in the obstructed view seating—rather than the VIP tent many celebrities attendees stand in, and Costner shared a few blurry video clips and photos from their spot, including clips of  "22" and "Don't Blame Me" and a photo that appears to have been taken during "You Need to Calm Down."

"My videos are blurry, but I had an amazing time with my daughter at the @taylorswift show," he wrote. "I was absolutely blown away watching her art bring so many people together."

He continued, "I had a great view of her band and had a blast watching them, too. An inspiring night. I’m officially a Swiftie!"

Costner was in attendance at one of Swift's final shows of the first US leg of the Eras Tour on Aug. 7 in Los Angeles.

The singer wrapped up her epic run on Aug. 9 at the same venue, where she announced the next of her re-recorded albums—1989 (Taylor's Version)—would be out this Oct. 27.

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Countless other celebs were spotted in attendance in the days leading up to the conclusion, including Mariska Hargitay, Channing Tatum, Pat Sajak's daughter Maggie, Savannah Guthrie, and Charlize Theron and her daughters.

It will be interesting to see who pops up at Swift's other concerts, as she hits the road again Aug. 24 for the start of the international leg of her tour.

Next: Internet Can’t Stop Laughing at New Footage of Taylor Swift Crawling Under Her Stage