The Secret Lives Of Scarlett Johansson's Kids: Everything You Need To Know About Rose And Cosmo

As of December 2025, the private world of Hollywood royalty Scarlett Johansson's children remains one of the most intriguing topics for fans. The Academy Award-nominated actress, known globally for her iconic roles from Black Widow to her Oscar-caliber performances, is also a devoted mother of two. She has intentionally shielded her children from the intense media spotlight, yet recent updates and rare comments from both Scarlett and her husband, Colin Jost, offer fascinating glimpses into their family life.

The star is a mother to two children from two different marriages: her eldest, a daughter named Rose Dorothy Dauriac, and her youngest, a son named Cosmo Jost. This article delves into the latest information surrounding her two kids, their unique personalities, and how the celebrated actress balances a blockbuster career with the demands of motherhood and co-parenting.

Scarlett Johansson: A Brief Biography and Family Profile

Scarlett Ingrid Johansson is one of the highest-paid and most recognizable actresses in the world. Her personal life, particularly her journey through marriage and motherhood, has been marked by a fierce dedication to privacy. Here is a snapshot of her key biographical and family details:

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• Full Name: Scarlett Ingrid Johansson
• Born: November 22, 1984 (Age 41 as of December 2025)
• Birthplace: New York City, U.S.
• Occupation: Actress, Producer, Singer
• First Marriage (2008–2011): Ryan Reynolds (Actor)
• Second Marriage (2014–2017): Romain Dauriac (French Journalist/Art Gallery Owner)
• Third Marriage (2020–Present): Colin Jost (Comedian, Writer on Saturday Night Live)
• Daughter: Rose Dorothy Dauriac
• Son: Cosmo Jost
• Notable Roles: Black Widow/Natasha Romanoff (in the MCU), Lost in Translation, Marriage Story, Jojo Rabbit.

Rose Dorothy Dauriac: The 11-Year-Old Who is Now Curious About Mom's Career

Rose Dorothy Dauriac is Scarlett Johansson’s eldest child, whom she shares with her ex-husband, French journalist and art gallery owner Romain Dauriac. Born on August 30, 2014, Rose celebrated her 11th birthday in 2025.

The Meaning Behind Her Name

The name 'Rose' is a beautiful tribute, as it is the name of Scarlett’s beloved grandmother. The middle name, Dorothy, is also a classic, giving her a timeless and elegant moniker. Despite the high-profile nature of her parents' divorce and a brief, contentious custody battle, both Scarlett and Romain Dauriac have maintained a commitment to co-parenting Rose privately and respectfully.

Growing Up and Discovering Black Widow

As Rose enters her pre-teen years, Scarlett has shared rare insights into her daughter's growing curiosity about her mother's career. In recent interviews, Scarlett mentioned that Rose is now old enough to understand that her mother is a famous actress, particularly in her iconic role as Black Widow in the Marvel Cinematic Universe (MCU).

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The actress has revealed that she had to carefully introduce her daughter to her films, especially the action-packed and more intense Marvel movies. This delicate balance of sharing her professional life while maintaining a sense of normalcy is a key part of Scarlett's approach to motherhood. Rose is reportedly a fan of her mother's work, a fact that is both heartwarming and a source of gentle amusement for the star.

Cosmo Jost: The 'SNL' Baby and His Unique Name

Cosmo Jost is Scarlett Johansson’s second child and first with her current husband, Saturday Night Live (SNL) head writer and 'Weekend Update' host, Colin Jost. Cosmo was born in August 2021 and is now 3 years old. His birth was announced by Colin Jost in a brief, humorous post on Instagram, which is typical of the couple's low-key humor.

The Family Controversy Over 'Cosmo'

The choice of the name 'Cosmo'—a nod to the cosmos or universe—is certainly unique, and Scarlett has admitted it caused a minor stir within her family. She revealed that members of Colin Jost's family were initially skeptical of the name. However, Jost’s mother eventually came around to the name, after realizing it was a sweet, unusual choice. The name is also a subtle tribute to the flower, which is a favorite of Scarlett's.

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A Shared Love for Music

Despite their young age, the children are already showing signs of their own personalities and interests. Scarlett recently shared a sweet, relatable update about her son, Cosmo, saying that they both share a love for the indie-pop artist Chappell Roan. This small detail shows a mother-son bond developing over shared musical tastes, providing a rare and charming peek behind the curtain of their life.

Colin Jost is also an active and loving father and stepfather. He has given rare insights into his life with Cosmo, emphasizing the importance of teaching his son to be a good person and how much he adores his role as a parent. He is also a supportive stepfather to Rose, who is now a pre-teen.

Motherhood, Co-Parenting, and Topical Authority

Scarlett Johansson’s journey as a mother highlights the complex reality of modern co-parenting and blended families in the celebrity world. She manages two children with different fathers, Romain Dauriac and Colin Jost, a dynamic that requires significant maturity and cooperation.

The actress has been vocal about the importance of maintaining privacy for her children, choosing not to share their photos on social media or bring them to public events. This decision is a conscious effort to give Rose and Cosmo a childhood that is as normal as possible, away from the constant scrutiny of the paparazzi and the public eye.

Relevant Entities & LSI Keywords:

• Family Members: Colin Jost, Romain Dauriac, Rose Dorothy Dauriac, Cosmo Jost, Melanie Sloan (mother), Vanessa Johansson (sister).
• Career/Roles: Black Widow, Natasha Romanoff, Marvel Cinematic Universe (MCU), Saturday Night Live (SNL), Marriage Story, Tony Award.
• Life Events: Co-parenting, Blended Family, Custody Battle, New York City, Palisades, Chappell Roan.

The Balance of Career and Family

Scarlett has often spoken about the challenges of balancing her demanding career with her role as a mother. She has noted that having children completely changes one's perspective, forcing a re-evaluation of priorities. Her commitment to projects like her skincare line, The Outset, is also seen as a way to engage in creative work that allows for a more flexible schedule, keeping her closer to her children.

The star’s dedication to keeping her kids grounded, despite their extraordinary circumstances, is a testament to her commitment to their well-being. From Rose's budding curiosity about the MCU to Cosmo's love for Chappell Roan, Scarlett Johansson's children are growing up with a mix of celebrity privilege and fiercely protected privacy, shaping them into unique individuals outside of the Hollywood bubble.