As a costume and scenic designer, Sivigny has worked on over thirty world premieres with Woolly Mammoth Theatre Company, Theater J, Kennedy Center Theater for Young Audiences, Imagination Stage, The Source Festival, Young Playwrights Theatre, The Hub, Studio Theatre 2nd Stage, and Rorschach Theatre where she has been a company member since 2006. She has also designed for Round House Theatre, Olney Theatre Center, Everyman Theatre, Signature Theatre, Colorado Shakespeare Festival, Rep Stage, Adventure Theatre, Shakespeare Theater’s Academy for Classical Acting, 1stStage, Keegan Theatre, Baltimore Shakespeare Festival, Opera Vivente, WSC Avant Bard, Flying V, DC and Seattle Fringe Festivals, Peridance, Dance Elixir and Tia Nina, among others.
She is a member of the second generation of The Welders, where she served as Lead Producing Playwright for her work Hello, My Name Is… Set in a house, she designed and created environments that channeled the lives of Korean adoptees. She is currently developing ideas for future iterations of the work. Her research includes development of “design-driven” works inspired by classic literature, politics and personal aesthetic and experience. She is a member of IATSE USA 829 and USITT.