Taylor Swift Brings Out Cara Delevingne & Mariska Hargitay at '1989' Concert in Philly! (Video)

Taylor Swift puts her arms around pals Cara Delevingne and Mariska Hargitay while on stage for her 1989 Tour on Friday evening (June 12) at Lincoln Financial Field in Philadelphia, Pa.

The 25-year-old entertainer sold-out two nights at the stadium and brought out the ladies, both of whom appear in her “Bad Blood” music video, during her singing of “Style.” Watch below!

“Couldn’t even contain my happiness because @caradelevingne and @therealmariskahargitay surprised the crowd tonight. #1989TourPhilly,” Tay captioned an Instagram photo of the three.

Taylor also invited Echosmith to the stage for a fun rendition of their hit “Cool Kids.” Click inside to see that!

Also pictured below: Cara keeps it low-key while leaving her hotel earlier that morning in New York City, carrying a Marshall speaker.

20+ pictures inside of Taylor Swift, Cara Delevingne, and Mariska Hargitay at the show…