Stephanie was born and raised in Singapore. She studied English at Cambridge University before going on to train on a scholarship at LAMDA.

Her theatre work has taken place on the country's main stages and internationally, predominantly in new writing. She's worked with directors such as Peter Gill, Daniel Evans, Rufus Norris, Max Stafford-Clark, Tamara Harvey, Mike Longhurst, Polly Findlay and Josie Rourke. Notable roles include Diana Ingram in Quiz, Marianne in Constellations at Singapore Repertory Theatre, Asha in Rufus Norris' stunning production of Behind the Beautiful Forevers and Abi in Nightwatchman, which earned her a nomination for Best Solo Performance at the 2012 whastonstage Awards.