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

Taylor Swift puts her arms around pals Cara Delevingne and Mariska Hartigay 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,