Longtime “Law & Order: SVU” actresses Mariska Hargitay and Kelli Giddish slayed the viral dance to their show’s theme song.

Hargitay and Giddish, best known for playing Capt. Olivia Benson and Sgt. Amanda Rollins on the popular “Law & Order” spinoff, recently recreated the line dance set to the tune of the show’s iconic ...