Julianne Nicholson is an American actress known for her versatile performances in film, television, and theater. She was born on July 1, 1971, in Medford, Massachusetts, and grew up as the eldest of four siblings in a family of Irish descent. After graduating from Arlington Catholic High School, she briefly pursued modeling in New York and Paris before deciding to focus on acting. She attended Hunter College in New York City but left to pursue her passion for acting full-time.

Julianne Nicholson began her acting career in the late 1990s, appearing in television series such as "Nothing Sacred" and "ER." Her breakthrough role came in the romantic comedy "The Love Letter," where she played a headstrong young feminist. 

Over the years, she has built an impressive filmography, including roles in "Tully," "Kinsey," "August: Osage County," "I, Tonya," and "Black Mass." She has also appeared in television series like "Law & Order: Criminal Intent," "Masters of Sex," "Boardwalk Empire," and "Mare of Easttown." Her performance in "Mare of Easttown" earned her a Primetime Emmy Award for Outstanding Supporting Actress in a Limited Series.

In her personal life, she is married to British actor Jonathan Cake. The couple met while working on an unaired television pilot and got married in 2004. They have two children, a son named Ignatius and a daughter named Phoebe. She values her family life and often balances her professional commitments with her role as a mother. 

She has spoken about the challenges of juggling her career and family but remains dedicated to both.

Her lifestyle reflects her grounded and private nature. Despite her success in Hollywood, she maintains a low profile and focuses on her craft. She is known for her dedication to her roles and her ability to bring depth and authenticity to her characters.

Her work has earned her critical acclaim and several awards, including a Hollywood Film Award for Ensemble of the Year for "August: Osage County" and nominations for Screen Actors Guild Awards and Independent Spirit Awards.