Background
She is the youngest of their four children; she has an older brother, George, and two older sisters, Alice and Lucy. Both Byrne's parents are atheists, while she describes herself as agnostic.
Best friends with fellow Australian actress Nadia Townsend.
Favorite actresses include Susan Sarandon, Cate Blanchett, Juliette Binoche.
Good friends with fellow Australian actresses Krew Boylan and Pia Miranda.
Byrne was in a relationship with Australian writer, director and actor Brendan Cowell for over six years. Cowell moved from Sydney to New York City, following Byrne’s success on Damages. The relationship ended in January 2010.
Career
She landed her first role in a movie, Dallas Doll, when she was 12 years old. Over the next few years, Rose appeared in a variety of Australian television series including high school drama Heartbreak High, as well as Echo Point, the short-lived Network Ten challenger to Home and Away. She also had a number of guest roles in drama series including GP, Big Sky, Wildside and Murder Call.
Byrne was the face of Max Factor between 2004 and 2006 and named in the Most Beautiful People of 2007 list in Who Magazine.
Byrne has supported UNICEF Australia by being the face of the 2007 Designers United campaign and a member of tropfest jury in 2006 and tropfest @ tribecain 2007. She is a graduate and ambassador for NIDA’s (National Institute of Dramatic Art) Young Actors Studio.