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.
Close friends with "NCIS: Naval Criminal Investigative Service" (2003) star Pauley Perrette.
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.
Has the same wedding anniversary with Numb3rs co-star Dylan Bruno, 24 June 2006.
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.
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.
Has twin girls Sawyer Lucia and Coco Trinity (b.August 28th 2008)
Pregnant with twins [April 21, 2008].