Jessica lived in Wellington, New Zealand until she was nine when her family relocated to Sydney for her father's (Marshall Napier) acting career.
Jessica's first acting job was at 10, playing her father's daughter on Police Rescue. She then featured in an episode which required a girl to be submerged in a swamp. Both of the girls (twins) booked to do the job refused, so Marshall nominated Jessica, who did it.
Jessica has been working consistently in Australian film and television for the past decade, including the features Angst, New Skin, Twitch, Cut, City Loop, War Story and Love Serenade. Her television credits include Head Start, Childstar, The Lost World, Luna and the Blind Man and Stingers. Jessica was a regular on Wildside and is highly regarded for her work on the improvisational-style series.