‘Loki’ Star Sophia DiMartino Had NO CLUE What She Was Auditioning For!

ET’s Ash Crossan speaks with Sophia DiMartino who stars opposite Tom Hiddleston in ‘Loki,’ streaming Wednesdays on Disney . DiMartino breaks down her audition process for the role of Sylvie, reveals what it was like donning the one-horned crown and shares her favorite fan theory yet!