Mangan-Lawrence started her film career in 2005 with the short films, Simulation 1201 and Galore.This was followed by a starring role as Georgie, in the short film Sexy Thing, which was accepted into the Cannes Film Festival.
Mangan-Lawrence was the cast in the 2008 horror film, Acolytes, directed by John Hewitt, premiered at the 2008 Toronto Film Festival. In Acolytes she played the role of Chasely, a naive and coquettish high school student. She subsequently featured in Nash Edgerton's film, The Square, as Lily. She was nominated for a Filmink award for 'Best Australian Newcomer' for this performance.
In 2009 she appeared in the Australian period drama, Lucky Country, directed by Kriv Stenders.
Mangan-Lawrence has featured in the Australian drama series, Bed of Roses, which screened on the ABC television network, playing Holly Atherton. In 2008 she received an AFI Award nomination for 'Best Guest or Supporting Actress in a Television Drama' for her role in Bed of Roses She was also nominated for the 'Graham Kennedy Award For Most Outstanding New Talent' at the Logie Awards in 2009
Mangan-Lawrence is the daughter of Maggie Mangan, an English teacher and playwright and has a half-sister Rosene and a half-brother Liam. She has represented Australia overseas as a member of the elite gymnastics team. In 2005 she won 'Acrobat of the Year - International - Senior' at the Gymnastics Australia National Awards. In 2009 Mangan-Lawrence completed her high school education at the Newtown High School of the Performing Arts[ through Pathways.
Sexy Thing (2006)
The Square - (2008)
Lucky Country (2009)
Rescue Special Ops - television series (2009)
Bed of Roses - television series (2008–10)