Stephanie made her Broadway debut in 2019 with the acclaimed revival of Kiss Me, Kate, where she originated the roles of Lois Lane/Bianca opposite Kelli O'Hara, Will Chase, and Corbin Bleu. She won the Theatre World Award for Outstanding Broadway or Off-Broadway Debut Performance.
Styles played the role of Princess Ann in the pre-Broadway production of Roman Holiday and starred as Katherine in the first national tour of Disney's Newsies.