Jessica was born in Sydney, Australia on 3rd February 1989 to Irish parents Alan Lytton and Therese Dillon. Her parents left Dublin and came to Australia in 1974. Growing up in the Eastern Suburbs of Sydney, Jessica attended Randwick Girls High School and on graduating in 2006, she made her directorial debut in 2007 at the age of 18. She went on to study film at The International Film School Sydney as well as Raffles College of Design. Jessica established herself as Australia's youngest director with the nationwide distribution of Green Fire Envy. She has an older brother, Sean and a twin brother, Simon.