Casey made her Broadway debut in Legally Blonde and later went on to be part of the Broadway National Tour. Other Theatre credits include: 42nd Street (Peggy Sawyer) at The Strand Theater; Urinetown (Little Sally) at Rivertown Rep; Grease (Frenchy) at Le Petit Theater. Casey has choreographed the Broadway Workshop productions of Legally Blonde, Xanadu and Carrie as well as numerous camps both in NYC and on tour.