Mariska Hargitay was a huge hit in Taylor Swift’s ‘Bad Blood‘ music video. The Law & Order SVU star even joined Swift on stage at one of her ‘1989’ concert tour shows on Friday in Philadelphia.

It was during Taylor Swift’s song ‘Style’ that both Mariska Hargitay and Cara Delevingne, who was also in ‘Bad Blood,’ strutted their stuff behind the singer on a catwalk.

The fans went wild when Mariska Hargitay was introduced.

It was certainly a blast for the Law & Order: SVU star.

Mariska Hargitay took to Twitter to share her excitement over appearing on stage with Taylor Swift.

.@taylorswift13 So honored to share the catwalk with you! And so tempted to hop on the tour bus… #UntilNextTime pic.twitter.com/7dM6VAsuDN

— Mariska Hargitay (@Mariska) June 14, 2015

Even more excitement took place backstage for Taylor Swift and Mariska Hargitay following the show. That’s when Olivia Benson met Olivia Benson.

As all good Taylor Swift fans know, Olivia Benson is the name of one of Taylor Swift’s cats. As all good Mariska Hargitay fans know, Olivia Benson is the name of the character she plays on Law & Order: SVU. And yes, the cat is named after that other Olivia Benson.

A video posted by Taylor Swift (@taylorswift) on Jun 13, 2015 at 10:10pm PDT

Grey’s Anatomy star Ellen Pompeo is likely hoping she’s next to appear on stage during a Taylor Swift concert. Taylor’s other cat is named–you guessed it–Meredith Grey.

Even though Mariska Hargitay joked about joining Taylor Swift’s ‘1989’ tour, the mom of three is likely way too busy to do any such thing. Between her family life, her charity work for abused women, and her role on Law & Order: SVU, it seems like her time as a rock star will be limited to special appearances.

Given the excitement of the crowd in Philly on Friday night, however, Taylor Swift will likely invite Mariska Hargitay back again–and soon, too.