Isabel Lucas was born on 29th January 1985 in Melbourne, Australia.She also had stints in Switzerland, Kakadu, and Australia's Northern Territory. She has a Swiss mother and an Australian father and speaks German and French in addition to her native English. Lucas went to a high school named Quakers Hill High in Sydney, Australia.
She auditioned for the role of Kit Hunter in Home and Away although the producer of the show, Julie McGauran, felt that role was not right for Isabel, she was sufficiently impressed to have a new character, Tasha Andrews, created for her. Lucas won a Logie Award (for new popular talent) for her performance on the program.
She has been cast as Gwen in the Steven Spielberg World War II miniseries, "The Pacific". She also appeared in "Transformers: Revenge of the Fallen" as Alice. In a recent article, Lucas refused to speculate on her latest casting.
She dated her former Home & Away co-star Chris Hemsworth until June 2006. She dated American actor Adrian Grenier during 2008, but they split up in August. She suffered a minor head injury in July 2008 in a car accident while she was a passenger in "Transformers" co-star Shia LaBeouf's car. She was not seriously injured, but he was cited with a misdemeanour DUI.