Taylor Swift's idol Mariska Hargitay has finally met the singer's cat, who was named after the actress' tough detective character Olivia Benson on TV drama Law & Order: Special Victims Unit. The Love Story hitmaker shared footage of the meeting backstage at her gig in Philadelphia, Pennsylvania on Friday night (12Jun15) and posted it online. Adding commentary, Swift said, "This is Olivia Benson meeting Olivia Benson and things are going well so far." Hargitay also made an unexpected appearance onstage at Lincoln Financial Field, alongside her Bad Blood video co-star Cara Delevingne, who was another of the pop star's special guests.