Stephanie was born in Dublin in 1990 and grew up in Glen of the Downs, County Wicklow. She has two younger brothers, and her parents worked in insurance. Stephanie talks about her parents’ mixed marriage (Presbyterian-Catholic), attitudes to religion and attendance at churches. 

Stephanie described changes in friendships and social circles as a teenager and her first experience of a romantic relationship. She remembers attending an independent, international school and how she experienced the teaching and ethos. She also discusses her further education, beginning with her enjoyment of a Drama and French degree at Trinity College Dublin. She talks about how she became interested in costume design and her training and career.