Once taught acting at a maximum-security prison.
Half-Irish and half-Italian.
She was a model at the age of 12.
While deciding on her major at New York's Stony Brook University, she took various theater classes. She then applied for a scholarship to a prestigious drama program at Loughborough University in England. She was accepted and studied classical theater there. She eventually graduated with a joint B.A. from the two universities.
She is also a budding author. Her first book, "The Girl Code: The Secret Language of Single Women (On Dating, Sex, Shopping and Honor Among Girlfriends)," was released on Valentine's Day 2001 . She has also written for Jane, Esquire, Glamour, and Self magazines and is a regular monthly contributor to Cosmopolitan, Soma, and Gear.
After a breakup with her fiancé, Diane and a friend, an artist named Laura Bailey, started a greeting-card company called Other Announcements.
She is producing Children of God: Lost and Found (2007), a forthcoming HBO documentary about the Children of God cult (also known as the Family of Love and The Family). It will examine the lives of several children who escaped from the cult and had to be reintroduced into mainstream society without money, education, or family support. Farr will produce and add artistic opinions.
During her freshman year in college (at Stony Brook) she was crowned "Miss New York." She was 19 at the time, the youngest woman ever to hold that title.
She was relieved to leave "Rescue Me" (2004) for "Numb3rs" (2005) after being away from her native Los Angeles home and for the physical demands of playing a New York City firefighter.
Diane and her husband, Seung Chung, became the parents of a boy, Beckett Mancuso Chung, on March 16, 2007 in Los Angeles. Beckett, named after Samuel Beckett, weighed in at 8 lb. 2 oz. and was 22 inches long.
Close friends with "Navy NCIS: Naval Criminal Investigative Service" (2003) star Pauley Perrette.
