Kevin Costner says he's 'officially a Swiftie' after attending the Eras Tour with 13-year-old daughter, Grace: 'I was absolutely blown away'

• Kevin Costner attended one of Taylor Swift's Los Angeles shows with his daughter, Grace, 13.
• The "Yellowstone" actor said he was "blown away watching her art bring so many people together."

Kevin Costner has proved that you're never too old to become a Swiftie.

The 68-year-old actor shared on Instagram that he and his 13-year-old daughter, Grace, attended one of Taylor Swift's sold-out Eras Tour shows in Los Angeles on Monday, and he left a convert to the "Midnights" singer.

"My videos are blurry, but I had an amazing time with my daughter at the @taylorswift show," he wrote alongside a carousel of videos and photos he took at the concert.

The "Yellowstone" actor said he was "absolutely blown away watching her art bring so many people together."

"I had a great view of her band and had a blast watching them, too," he added. "An inspiring night. I'm officially a Swiftie!"

In a video obtained by Page Six, Costner, who dabbles in music himself as part of the band, Kevin Costner & Modern West, can be seen watching Swift perform "We Are Never Ever Getting Back Together" and "Love Story" from a private suite at SoFi Stadium with his teenage daughter.

The Academy Award winner's father-daughter outing came amid his increasingly bitter divorce from his estranged wife Christine Baumgartner, with whom he also shares sons Cayden, 16, and Hayes, 14.

The handbag designer, 49, filed for divorce from the "Dances With Wolves" star in May, citing "irreconcilable differences."

Since then, the pair's lawyers have been battling it out to ensure the best outcome for their respective clients.

Costner landed one early legal victory after a Santa Barbara county judge ordered Baumgartner to move out of the former couple's $145 million beachfront property, per a clause set out in their prenuptial agreement from their 2004 marriage.

Last month, the couple's child support payment dispute was settled, with Costner to pay his soon-to-be ex-wife $129,755 per month until the divorce is finalized — much lower than Baumgartner's original request of $248,000 a month, but still far more than what his legal team proposed.

In late July, Baumgartner made good on her promise to vacate the former couple's home but only moved so far as a smaller house on the compound typically used as staff quarters, according to People.