In Jersey Boys, the guys get the glory as legendary singing group Frankie Valli and the Four Seasons. But while they’re singing hits like “Walk Like A Man” and “Sherry,” three hard-working actresses are singing backup, moving set pieces and making lightning-fast costume changes in the wings. In this installment of Quick Change, we shine the spotlight on Jersey girl Kara Tremel, who plays Frankie Valli’s wife Mary Delgado (among a dozen other roles) in the national tour of the hit musical. Take a look as she models her many outfits by costume designer Jess Goldstein and dishes on how she executes 15 unbelievable costume changes seamlessly every night. Catch Jersey Boys when it comes to the Procter & Gamble Hall at the Aronoff Center for the Arts from November 28 through December 9.