Milaine Desaulniers is best known publicly as the younger sister of Academy Award-winning actor Brie Larson, but reducing her identity to a famous family connection misses the more interesting story. Public records, school directories, entertainment credits, and interviews involving Larson show that Milaine has built a career centered on education while maintaining a small but genuine connection to film and the creative world.
That distinction matters because online biographies about her often mix documented facts with recycled claims. The strongest evidence points to a mathematics educator and student-leadership professional who has also appeared in a handful of screen projects under the name Mimsy Desaulniers, rather than someone whose primary occupation is full-time Hollywood acting or filmmaking.
Who Is Milaine Desaulniers?
Milaine is the younger sister of Brie Larson, whose birth name is Brianne Sidonie Desaulniers. PEOPLE reports that Heather and Sylvain Desaulniers welcomed Milaine in 1993, several years after Brie’s 1989 birth, while entertainment databases identify her more fully as Raya Milaine Desaulniers.
Her public identity appears under several forms: Milaine, Raya Desaulniers, Raya Milaine Desaulniers, and Mimsy Desaulniers. That variation helps explain why her online footprint looks fragmented; professional education pages frequently use Raya or Mimsy, while celebrity and family coverage generally refers to her as Milaine.
Milaine Desaulniers quick facts
- Full name reported publicly: Raya Milaine Desaulniers
- Commonly known as: Milaine
- Nickname/credit name: Mimsy Desaulniers
- Reported birth date: January 5, 1993
- Age in 2026: 33
- Birthplace: Sacramento, California
- Known for: Being Brie Larson’s younger sister, mathematics education, and limited acting credits
- Current documented profession: Math teacher and ASB director
- Notable screen credit: Genevieve in the 2012 short film The Arm
The January 5, 1993 birth date appears in IMDb’s biographical information for Brie Larson’s sibling and in other public biographical databases. Because Milaine maintains a much lower-profile public presence than her sister, it is useful to distinguish database-reported details from information confirmed through an employer, a direct interview, or another primary source.
Milaine Desaulniers and Brie Larson: Their Family Connection
The most established public fact about Milaine Desaulniers is her relationship with Brie Larson. PEOPLE identifies Milaine as Brie’s younger sister and describes the family’s move from Sacramento to Los Angeles after their parents separated, during the period when Brie was pursuing acting opportunities.
Their parents, Heather and Sylvain Desaulniers, worked as chiropractors and shared a practice. After the separation, Heather relocated with the two daughters to Los Angeles, where the family lived with limited financial resources while Brie went to auditions.
Much of what is publicly known about this part of their childhood comes from Brie Larson’s own interviews. That is an important distinction: her memories provide strong context for the sisters’ shared environment, but they should not automatically be presented as Milaine’s own views or feelings.
A sibling bond built around Nintendo games
One of the clearest first-person accounts of the sisters’ relationship concerns Animal Crossing. In a 2020 PEOPLE interview, Larson said that the original GameCube version was especially important to her and her sister, recalling that their mother used turns on the game as an incentive for completing homework.
Years later, Animal Crossing: New Horizons became another way for them to connect. Larson explained that the sisters could visit each other’s virtual islands while communicating remotely, turning a childhood interest into an adult bonding ritual.
Their Nintendo memories go beyond one game. In an ELLE interview, Larson also recalled experiencing early Mario Kart games with her sister and described the notoriously difficult Rainbow Road as part of their shared family gaming history.
What Does Milaine Desaulniers Do for a Living?
The best-supported answer is education. An official Canyon High School staff directory currently lists Mimsy Desaulniers as both an ASB Director and Math Teacher, and she also appears within the school’s mathematics department.
Public employment records also list Raya Milaine Desaulniers as a teacher within the William S. Hart Union High School District across multiple years. Those records align with a professional LinkedIn result for Raya Desaulniers identifying her as a mathematics teacher.
This matters because some biography pages describe her primarily as an “actress” or “independent filmmaker.” She does have real entertainment credits, but the continuous and independently documented professional trail is considerably stronger in secondary education.
From mathematics teaching to student leadership
A 2020 report from The Santa Clarita Valley Signal identified Mimsy Desaulniers as a math teacher and ASB director at Valencia High School. The report covered a student project in which the ASB created personalized Valentine messages intended to help students across campus feel recognized and appreciated.
The current Canyon High School directory lists her in a similar combination of roles: mathematics teacher and ASB director. Taken together, the sources show that her professional work extends beyond equations and classroom instruction into student activities, leadership, and school-community engagement.
A LinkedIn search result for Raya Desaulniers also lists a Bachelor of Arts from the University of California, Irvine, with educational sciences and mathematics teacher education appearing in the profile information. Since LinkedIn credentials are normally self-reported, this is useful supporting evidence but should be distinguished from an official university transcript or alumni record.
Is Milaine Desaulniers an Actress or Filmmaker?
She does have legitimate screen credits, but the wording needs precision. Under the name Mimsy Desaulniers, IMDb and TV Guide document acting work, most notably her performance as Genevieve in the short film The Arm.
Released in 2012, The Arm was directed by Jessie Ennis, Brie Larson, and Sarah Ramos. Film editor Max Goldblatt’s professional project page lists Mimsy Desaulniers among the starring cast, providing another independent source connecting her to the project.
IMDb also associates Mimsy with The Dew Project (2021), which was directed by Brie Larson and featured both sisters. Her IMDb page additionally lists Releasing My First Short Film, Warning: Childhood Cringe among her known projects.
These appearances establish authentic creative experience, but they do not necessarily establish a sustained career as a professional filmmaker. Calling her a major “Hollywood filmmaker” would therefore stretch the available evidence.
A better description is mathematics educator and student-leadership director with occasional acting and creative-project credits. That wording reflects both sides of the public record without inflating a handful of screen appearances into a career that the evidence does not clearly support.
Milaine Desaulniers at the 2019 Academy Awards
One of her most visible public appearances came at the 91st Academy Awards on February 24, 2019. Editorial photography and entertainment coverage documented her arriving with Brie Larson at the Dolby Theatre in Hollywood.
The appearance attracted attention because Brie was already an Oscar-winning actor and, by that stage, one of Marvel Studios’ prominent stars. Milaine did not subsequently develop the type of sustained red-carpet or publicity presence normally associated with a celebrity career.
That difference helps explain her unusual search footprint. There are photographs and celebrity-family profiles about her, yet substantially more concrete professional information emerges from school and education sources than from traditional entertainment reporting.
How Old Is Milaine Desaulniers?
Milaine Desaulniers is 33 years old in 2026 based on the widely reported January 5, 1993 date of birth. IMDb identifies Brie Larson as the older sister of Raya Desaulniers and gives January 5, 1993 as her birth date.
The birth year has additional support from PEOPLE, which reports that Heather and Sylvain welcomed Brie’s younger sister in 1993. The precise day and month rely more heavily on entertainment and biographical databases, while the year is independently corroborated by mainstream reporting.
Milaine Desaulniers’ Childhood and Early Life
The Desaulniers sisters were raised initially in Sacramento, California. PEOPLE’s reporting on Brie Larson’s family states that Heather later moved with both daughters to Los Angeles as Brie pursued acting, around the same general period in which the parents separated.
Larson has described the family living in a small apartment with limited resources during those years. She has also credited their mother with creating a positive environment for the children despite the financial strain and uncertainty surrounding the move.
For an accurate biography, the distinction between shared history and individual testimony matters. The detailed emotional account comes largely from Brie’s interviews, not from a comparable long-form public interview with Milaine, so it would be irresponsible to assign every one of Brie’s conclusions about their childhood to her sister.
Why Does She Sometimes Appear as “Mimsy Desaulniers”?
“Mimsy Desaulniers” is not simply a random name attached to her by celebrity blogs. It appears in an official school directory, local education reporting, IMDb, TV Guide, and cast information for The Arm.
Biographical databases also connect the nickname Mimsy with Raya Desaulniers. That cross-source pattern makes it reasonable to treat Mimsy as a name used in both her professional education work and some entertainment credits.
For entity clarity, publishers should connect these names rather than accidentally presenting them as separate people. In practical terms, Raya Milaine Desaulniers, Milaine, Raya Desaulniers, and Mimsy Desaulniers all appear within the available record surrounding Brie Larson’s younger sister.
What Is Actually Verified—and What Is Not?
Celebrity-family search results frequently repeat claims that can be traced to another low-authority biography page rather than a primary source. With this subject, it is more useful to rank information by evidence quality instead of simply repeating whatever appears most often.
Well-supported facts include:
- She is Brie Larson’s younger sister.
- She was born in 1993.
- She has a documented career in mathematics education.
- She is currently listed as a math teacher and ASB director.
- She played Genevieve in The Arm.
- She and Brie share a documented interest in Nintendo games.
- She accompanied Brie at the 2019 Academy Awards.
Claims that deserve much more caution include:
- Exact net-worth figures with no financial documentation.
- Detailed romantic or marital-status claims based only on biography sites.
- Claims that she works primarily as a full-time filmmaker.
- Social-media accounts presented as official without convincing verification.
- Private family details that neither she nor a reliable first-hand source has confirmed.
This evidence-first approach provides more information value than another generic celebrity profile. It also strengthens E-E-A-T because readers can see not just what is claimed, but which claims rest on stronger documentation.
Why Milaine Desaulniers Attracts Search Interest
Interest in Milaine Desaulniers comes from several overlapping search intents. Brie Larson fans naturally want to understand the actor’s family background, while other readers encounter the name through Oscar photographs, film credits, education pages, or stories about Larson’s Nintendo fandom.
Her story is particularly interesting because the two sisters followed noticeably different professional paths. Brie built an internationally visible career in film, while the younger sister’s strongest documented professional footprint is in education and student leadership.
That also explains why her online identity can initially seem inconsistent. IMDb points toward acting, school records point toward teaching, red-carpet photographs connect her with Hollywood, and interviews with Brie reveal the family relationship. Together, those sources describe different parts of the same public record rather than necessarily contradicting one another.
Frequently Asked Questions About Milaine Desaulniers
Who is Milaine Desaulniers?
She is the younger sister of Academy Award-winning actor Brie Larson. The strongest professional evidence identifies her as a mathematics teacher and ASB director, while entertainment databases document several limited acting and creative credits under the name Mimsy Desaulniers.
What is her real name?
Her full name is widely reported as Raya Milaine Desaulniers. Celebrity coverage commonly calls her Milaine, while professional and entertainment sources also use Raya Desaulniers and Mimsy Desaulniers.
What does Milaine do now?
Current school information lists Mimsy Desaulniers as a math teacher and Associated Student Body director at Canyon High School. Earlier reporting documented similar mathematics and ASB responsibilities at Valencia High School, suggesting a consistent career path in secondary education and student leadership.
Has Milaine appeared in movies?
Yes. Her clearest acting credit is Genevieve in the 2012 short film The Arm, which was directed by Jessie Ennis, Brie Larson, and Sarah Ramos. IMDb also associates her with The Dew Project and another short-form project released in 2021.
Are Brie Larson and Milaine Desaulniers close?
Public evidence supports describing them as having a warm sibling relationship, although outsiders cannot know every aspect of a private family bond. Brie has spoken directly about playing Animal Crossing with her sister during childhood and reconnecting through the game as adults, and the sisters have appeared together at major public occasions including the 2019 Oscars.
Conclusion
The most accurate picture of her life is more grounded—and more interesting—than many celebrity-biography pages suggest. Milaine Desaulniers is certainly known because of her connection to Brie Larson, but reliable evidence also reveals a sustained career in mathematics education and student leadership, alongside a smaller creative footprint that includes genuine acting credits.
For readers researching her, the best next step is to prioritize official school records, reputable first-person interviews, established entertainment databases, and credible news coverage over unsourced claims about wealth, relationships, or an exaggerated Hollywood career. That produces a more useful biography, respects the limits of the public record, and answers the search intent without sacrificing accuracy.
