Taylor Swift’s Eras Tour opened in Glendale, Arizona, last week with over 60,000 fans in attendance – including none other than Emma Stone. Even though Stone and Swift are known to be good friends, she turns into a total fangirl when Swift performs.

The 34-year-old actress sang along to Swift’s hit track “You Belong with Me” in the VIP section of State Farm Stadium, captured on video and later uploaded to TikTok by an audience member. Captioned “Emma Stone losing her gd mind over YBWM,” the clip posted by @oreoofficial has gathered over 2.8 million views and 430,000 likes on TikTok so far.

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Another video posted to Twitter shows Stone enjoying herself while singing along to “Fearless.”

Swift’s setlist highlighted her 17-year career across 44 songs. She kicked off her show with “Miss Americana & The Heartbreak Prince” then moved on to “Cruel Summer,” both songs from her 2019 album Lover. At the end of the three-hour concert, she performed “Karma,” off her latest album Midnights.

Swift first met Stone at the Young Hollywood Awards in 2008. They became good friends right away, and Swift even attended the 2010 premiere of Stone’s movie Easy A as her date. It’s not the first time Stone has attended a Swift concert, either; in July 2018, she was reportedly spotted attending the Reputation tour in New Jersey.