Early life

DeWitt was born in Flushing, Queens, New York, the daughter of Rosemarie (Braddock) and Kenny DeWitt. She is a granddaughter of boxer James J. Braddock, and played the role of neighbor Sara Wilson in the movie Cinderella Man, which depicted James J. Braddock's life.

DeWitt lived in Hanover Township, New Jersey and is a graduate of Whippany Park High School. She performed in several high school productions. She attended the New College at Hofstra University where she received a Bachelor of Arts in creative studies. While at Hofstra University, she also joined Alpha Phi. She had additional training at The Actors Center in New York.

Career

Theatre

DeWitt performed in numerous off Broadway plays. Most notably, she starred in John Patrick Shanley's Danny and the Deep Blue Sea at the Second Stage Theatre; George S. Kaufman's The Butter and Egg Man at the Atlantic Theater Company; and Craig Lucas' Small Tragedy, for which the entire cast won an Obie Award. From May 4-23, 2010, DeWitt appeared in MCC Theater's Off Broadway play Family Week, written by Beth Henley and directed by Jonathan Demme. In its review of the play, the New York Times stated that DeWitt's lead performance "has many affecting moments as the beleaguered Claire."

TV

DeWitt appeared in Showtime's series United States of Tara as Tara's sister, Charmaine. She appeared in Season 1 of the AMC series, Mad Men, as Midge Daniels, lead character Don Draper's bohemian mistress, and returned for one episode in Season 4. She co-starred with Ron Livingston in the 2006-2007 Fox series Standoff. She played FBI hostage negotiator Emily Lehman. DeWitt has also appeared on television in Law & Order: Special Victims Unit, Sex and the City, Rescue Me, and Love Monkey.

Film

DeWitt is featured in the film, Margaret opposite Anna Paquin and Mark Ruffalo. Additional film credits include Purple Violets, Off the Black, Shut Up and Sing, The Great New Wonderful, Blackbird and How I Got Lost. She plays the role of Rachel in the Jonathan Demme-directed movie Rachel Getting Married (2008) alongside Anne Hathaway, for which she won several critics' awards and a Satellite Award for Best Supporting Actress.

DeWitt played Ben Affleck's character's wife in the corporate drama The Company Men. In 2011 she played Hannah, one of the three lead characters in the critically acclaimed Your Sister's Sister, opposite Emily Blunt and Mark Duplass. In 2011, she played Renee Blair in the film A Little Bit of Heaven starring Kate Hudson.

In 2012, she played Alice in Gus Van Sant's film Promised Land, released on December 28, 2012.

Personal life

She married actor Ron Livingston, her co-star in Standoff, on November 2, 2009, in San Francisco. In May 2013, Rosemarie and husband Ron announced that they had adopted a daughter. Gracie James Livingston was born on April 29, 2013.

Filmography

Film

Year	Title	Role	Notes
2004	Fresh Cut Grass	Actor
2005	The Great New Wonderful	Debbie
	Cinderella Man	Sara Wilson
	Buy It Now	Mom
2006	The Wedding Weekend	Dana
	Doris	Doris
	Off the Black	Debra
2007	Purple Violets	Murph's Hamptons fling
2008	Afterschool	Teacher
	Rachel Getting Married	Rachel	Santa Barbara International Film Festival: Virtuoso Award Satellite Award for Best Supporting Actress - Motion Picture Toronto Film Critics Association Award for Best Supporting Actress Utah Film Critics Association Award for Best Supporting Actress Vancouver Film Critics Circle Award for Best Supporting Actress Washington D.C. Area Film Critics Association Award for Best Supporting Actress Nominated - Broadcast Film Critics Association Award for Best Cast Nominated - Chicago Film Critics Association Award for Best Supporting Actress Nominated - Dallas-Fort Worth Film Critics Association Award for Best Supporting Actress Nominated - Detroit Film Critics Society Award for Best Supporting Actress Nominated - Detroit Film Critics Society Award for Best Newcomer Nominated - Gotham Independent Film Award for Best Ensemble Cast Nominated - Gotham Independent Film Award for Breakthrough Actor Nominated - Independent Spirit Award for Best Supporting Female Nominated - International Cinephile Society Award for Best Supporting Actress Nominated - New York Film Critics Circle Award for Best Supporting Actress
2009	Tenure	Beth
	How I Got Lost	Leslie
2010	The Company Men	Maggie Walker
2011	A Little Bit of Heaven	Renee Blair
	Your Sister's Sister	Hannah	Gotham Independent Film Award for Best Ensemble Performance Nominated - Independent Spirit Award for Best Supporting Female Nominated - International Cinephile Society Award for Best Supporting Actress
	Margaret	Mrs. Marretti
2012	The Odd Life of Timothy Green	Brenda Best
	Nobody Walks	Julie
	The Watch	Abby Trautwig
	Promised Land	Alice
2013	Touchy Feely	Abby
2014	Men, Women & Children	Helen Truby
	Kill the Messenger	Susan Webb
2015	Digging for Fire	Lee
	Poltergeist	Amy Bowen
2016	La La Land		Filming

Television

Year	Title	Role	Notes
2001	Law & Order: Special Victims Unit	Gloria Palmera	1 episode
2003	Sex and the City	Fern	1 episode
2005	The Commuters	Trisha	TV-Film
	Rescue Me	Heather	2 episodes
2006	Love Monkey	Abby Powell	1 episode
2006-2007	Standoff	Emily Lehman	18 episodes
2007, 2010	Mad Men	Midge Daniels	7 episodes
2009	Wainy Days	June	1 episode
2009-2011	United States of Tara	Charmaine Craine	36 episodes
2014	Olive Kitteridge	Rachel Coulson	HBO miniseries; 2 episodes

[ Source: Wikipedia ]