Taylor Swift now has two Olivia Bensons in her life. The Grammy winner, who famously named one of her cats after Mariska Hargitay's Law & Order: Special Victims Unit character, has since become close personal friends with the actress herself.

Hargitay, 51, stopped by Late Night with Seth Meyers on Monday, May 18, after appearing in Swift's talked-about new "Bad Blood" music video, which debuted on Sunday with additional cameos from a laundry list of stars such as Kendrick Lamar, Selena Gomez, Cara Delevingne, and Lena Dunham

"It's just so awesome and it makes me feel super badass," Hargitay told host Seth Meyers of the music video. "I feel like my cool-factor went up with the kids and I'm really grateful, Taylor."

The SVU actress starred in "Bad Blood" as Justice with Ellen Pompeo by her side. Pompeo, 45, also has a feline tie to Swift as the singer's other cat is named Meredith Grey after the star's Grey's Anatomy character. Swift, 25, has been a longtime fan of the shows and publicized her fandom to Hargitay on one swanky evening.

"I met her at the Met Gala and I was so uncool," Hargitay told Meyers of Swift. "She's down there and she's like, 'Hi, I like your show.' I'm like, 'Oh, thanks.' I didn't know that she was like, the second coming. She was so sweet and I was like, 'Oh, she's so sweet,' and I met her and was super flattered."

The two stars' sweet meeting later developed into a friendship when they ran into one another in New York City.

"We both are big fans of Ingrid Michaelson and we were together at an Ingrid Michaelson concert — who's also a friend of ours," the Emmy winner explained. "We met, and she was again, so unbelievably lovely. Of course I didn't have a ride home, but it was somewhere so far out in Queens. All of a sudden, my husband and I are like, 'How are we getting home?' cause there were no cars or anything."

"She was like a little angel that goes, 'Oh, do you guys need a ride?'" Hargitay continued. "I was like, 'Oh no, why?' And then she drove us home and that was the end of it... I got the text going, 'Wanna be in my video?' I was like, 'Lemme check my calendar!'"

Find out what Hargitay's 4-year-old daughter thought of her mom's cool new gig and watch the actress talk Swift in the video above!