Taylor Swifts "Eras Tour" is so major you can apparently even have an A-list celebrity encounter in the audience.

That's what two young women found out when they went to a recent "Eras" show at Los Angeles' SoFi Stadium and interacted with a distinctly familiar face in the seats nearby.

TikToker @secondhandshroom and her friend couldn't get over how much the "super nice lady" who took a picture of them before the show looked like Grey's Anatomy and Killing Eve star Sandra Oh—because it turns out...it was Sandra Oh.

In her TikTok, @secondhandshroom wrote that she and her friend had asked "a super nice lady to take our picture at the bottom of our section before the eras tour."

The video then shows several Google Images photos of Sandra Oh with onscreen text that reads:

“She looks so much like Cristina Yang from Greys Anatomy!”

Oh is probably best known for her stint on the long-running medical drama, which began in 2005 with Oh as part of its original cast. Oh went on to win a Golden Globe and SAG Award for her work on the show before leaving it in 2014.

The young women soon learned their hunch about the "super nice lady" was correct when Oh herself posted a selfie on her Instagram page of her in the stands for the "Eras Tour," which she captioned, "me and my fave Swifties!"

On TikTok, people couldn't believe the women's good fortune—and that they didn't immediately recognize such an iconic television star.

@secondhandshroom/TikTok

@secondhandshroom/TikTok

@secondhandshroom/TikTok

@secondhandshroom/TikTok

@secondhandshroom/TikTok

@secondhandshroom/TikTok

@secondhandshroom/TikTok

@secondhandshroom/TikTok

@secondhandshroom/TikTok

Oh is also known for appearing in the Oscar-winning film Sideways in 2004, and for playing the title role in the BBC's Killing Eve, for which she received multiple Emmy nominations and won a Golden Globe and SAG Award.