Milaine Desaulniers: Who Is Brie Larson’s Younger Sister?

Milaine Desaulniers is best known publicly as the younger sister of Academy Award-winning actress Brie Larson, but describing her only through that family connection misses much of the story. While Larson built an international acting career, Desaulniers followed a substantially more private path centered on education.

Publicly available sources also use the name Mimsy Desaulniers, while employment records identify her as Raya Milaine Desaulniers. Current school information lists Mimsy Desaulniers as a math teacher and Associated Student Body (ASB) director at Canyon High School in California.

Much of the online information about Desaulniers comes from secondary celebrity websites, some of which repeat personal details without identifying reliable sources. This guide separates well-supported facts from speculation and explains what is actually known about her childhood, career, relationship with Brie Larson, and occasional connection to entertainment.

Milaine Desaulniers Quick Facts

The family connection is documented across biographies and interviews, while Canyon High School’s current staff directory independently confirms Desaulniers’ professional role in education.

Who Is Milaine Desaulniers?

Milaine Desaulniers is the younger sister of Brie Larson, whose birth name is Brianne Sidonie Desaulniers. Larson has referred to her sister as Mimsy in interviews, and entertainment databases also list an actress named Mimsy Desaulniers as Larson’s sister.

That explains why searches for “Milaine Desaulniers,” “Mimsy Desaulniers,” and “Raya Milaine Desaulniers” can lead to seemingly different profiles. Available records strongly indicate that these names refer to the same person.

Unlike Brie Larson, however, Desaulniers has not built her primary career around celebrity.

Is Milaine Desaulniers famous?

Not in the conventional sense.

Most public interest in Milaine Desaulniers originates from her relationship with Brie Larson rather than from an independently cultivated celebrity profile. Her current professional presence is associated more strongly with education than Hollywood.

That distinction matters because celebrity-biography websites sometimes treat relatives of famous people as though they are public figures with extensively documented personal lives. In Desaulniers’ case, the reliable public record is comparatively limited.

Milaine Desaulniers and Brie Larson Are Sisters

Brie Larson has discussed growing up with her younger sister in multiple interviews. An ELLE profile described Larson’s mother moving Brie and her younger sister, Mimsy, from Northern California to Los Angeles as Larson began pursuing acting.

The Independent similarly reported that Larson moved from Sacramento to Los Angeles with her mother and younger sister Milaine during childhood. What began around Larson’s acting ambitions became a permanent move during a major period of change for the family.

These accounts are particularly valuable because they come from interviews involving Larson herself rather than from later celebrity-profile sites reconstructing the family’s history.

Their Childhood in Sacramento and Los Angeles

The Desaulniers sisters spent part of their early childhood in Sacramento, California. When Brie was still a child, their mother took both daughters to Los Angeles so Brie could pursue acting opportunities.

The family’s early Los Angeles lifestyle was modest. Contemporary profiles recount the mother and daughters living together in a small furnished apartment while Larson pursued auditions.

For Milaine, this meant growing up alongside the beginnings of an entertainment career that would eventually turn her sister into an Oscar-winning actor.

Why this part of Milaine’s story matters

It is easy to look backward at Brie Larson’s success and assume the family always lived near Hollywood’s center. The documented story is almost the opposite: the sisters experienced the uncertainty of relocating for an acting opportunity long before fame or financial security entered the picture.

That context also helps explain why references to Milaine appear throughout profiles of Larson’s childhood even though Milaine herself did not pursue the same level of public visibility.

What Does Milaine Desaulniers Do for a Living?

The strongest current evidence points to a career in education.

Canyon High School’s official staff directory lists Mimsy Desaulniers as an ASB Director/Math Teacher and also includes her within the school’s mathematics department.

Public school employment records independently list Raya Milaine Desaulniers as a teacher within the William S. Hart Union High School District, further supporting the connection between Milaine/Mimsy and a long-term teaching career. Records extend through 2024.

Her work goes beyond teaching mathematics

Desaulniers’ role includes student leadership activities through ASB.

In 2020, local news coverage identified Mimsy Desaulniers as a math teacher and ASB director while reporting on a student-led Valentine’s Day kindness project. The initiative involved students creating personalized messages intended to make classmates feel recognized and appreciated.

This provides a more useful picture of her professional life than generic descriptions such as “Brie Larson’s sister”: she has developed an identifiable career working with students and school leadership programs.

Milaine Desaulniers’ Connection to Mathematics Education

Evidence of Desaulniers’ interest in mathematics extends beyond a staff listing.

A Teachers Pay Teachers profile under the name Mimsy Desaulniers contains mathematics resources involving topics such as factoring, quadratics, polynomial graphing, and algebra. One resource description explicitly states that its creator teaches math.

The combination of an official school directory, public employment records, local reporting, and teaching materials makes her career as a mathematics educator one of the best-documented parts of her public biography.

Milaine Desaulniers and Brie Larson’s Love of Animal Crossing

One unusually well-documented glimpse into the sisters’ relationship involves Nintendo’s Animal Crossing series.

Larson told ELLE that she, her sister, and their mother played the original Animal Crossing when they were younger. The family reportedly had a rule connecting homework completion with who got to play first.

Years later, the game remained a bonding activity between the sisters. During the Animal Crossing: New Horizons era, Larson discussed reconnecting with Milaine through the game and visiting each other’s virtual islands while communicating remotely.

Why the Animal Crossing story is more revealing than it seems

Celebrity-family articles frequently rely on vague claims that siblings are “very close.” The Animal Crossing interviews offer something more concrete: a shared childhood ritual that continued into adulthood.

It also shows that Milaine occasionally enters public interviews not because she is promoting herself, but because Larson naturally references their shared experiences.

Did Milaine Desaulniers Work as an Actress?

She appears to have participated in a small number of screen projects, although acting does not appear to be her primary career.

IMDb lists Mimsy Desaulniers with three acting-related credits: The Arm (2012), The Dew Project (2021), and Releasing My First Short Film, Warning: Childhood Cringe (2021). The same profile identifies her as Brie Larson’s sister.

These credits are worth acknowledging, but they should not be exaggerated into a substantial Hollywood acting career.

Is Milaine Desaulniers on IMDb?

Yes, under the name Mimsy Desaulniers.

Someone searching only “Milaine Desaulniers IMDb” may therefore miss the relevant listing because the entertainment database uses her nickname.

Milaine Desaulniers at the 2019 Oscars

One of Desaulniers’ most visible public appearances occurred at the 91st Academy Awards on February 24, 2019.

Editorial photography from the ceremony identifies Brie Larson and Milaine Desaulniers arriving together at the Dolby Theatre in Hollywood.

The appearance understandably generated additional interest in Milaine because Larson was already globally recognizable through films including Room and the Marvel Cinematic Universe.

Yet Desaulniers did not turn the event into a sustained celebrity presence. Her public footprint remained comparatively limited afterward.

Why Is Milaine Desaulniers Sometimes Called Mimsy?

“Mimsy” is a name Brie Larson herself has publicly used for her sister.

In an ELLE profile, Larson’s younger sister is identified as Mimsy, while other reporting identifies that same younger sister as Milaine. IMDb’s Mimsy Desaulniers page likewise describes her as Larson’s sister.

Meanwhile, public employment data uses the fuller name Raya Milaine Desaulniers.

The different naming conventions are therefore not evidence of multiple sisters. They reflect the use of a fuller legal-style name, a middle/name variation, and a nickname across different sources.

Is Milaine Desaulniers Active on Social Media?

There is no clearly established, widely verified celebrity-style social media presence for Milaine comparable with Brie Larson’s.

That is important because search results can contain accounts belonging to people with similar names, fan profiles, reposted photographs, or pages created by third parties. Without direct verification, such profiles should not automatically be attributed to her.

For readers researching Milaine Desaulniers, established interviews, official school information, reputable editorial photography, and clearly attributed professional records are more dependable than anonymous social posts.

What Is Milaine Desaulniers’ Net Worth?

There is no reliable public evidence establishing Milaine Desaulniers’ net worth.

Websites that publish precise estimates for the relatives of celebrities often fail to disclose documentation supporting those figures. Her profession is publicly documented, but that does not make it possible to calculate her assets, debts, investments, property holdings, or overall net worth accurately.

Any exact “Milaine Desaulniers net worth” figure should therefore be treated cautiously unless it comes with meaningful financial documentation.

Is Milaine Desaulniers Married?

Reliable mainstream and first-party sources do not appear to provide enough information to make a confident statement about Milaine Desaulniers’ current marital or relationship status.

The same caution applies to claims about children and other private family matters.

A lack of public information is not evidence for either answer. For someone who maintains a comparatively private life, “not publicly confirmed” is more accurate than converting speculation into biography.

Common Inaccuracies About Milaine Desaulniers

Because reliable information about Desaulniers is relatively limited, low-quality biography pages can easily outrank original sources and then repeat one another.

Readers should be particularly cautious about:

• Exact net-worth estimates with no financial evidence.
• Relationship or marriage claims without direct confirmation.
• Social accounts presented as official without verification.
• Claims that Desaulniers has a major entertainment career simply because she has a few credits.
• Articles confusing the names Milaine, Raya Milaine, and Mimsy and treating them as different people.
• Personal details copied across celebrity sites without an identifiable original source.

A better approach is to prioritize information that can be traced to interviews, official institutional pages, established publications, or documented public appearances.

Milaine Desaulniers vs. Brie Larson

The contrast is what makes searches for Milaine particularly interesting. Two sisters who shared the same formative relocation to Los Angeles ultimately developed careers in very different professional environments.

Frequently Asked Questions About Milaine Desaulniers

Who is Milaine Desaulniers?

Milaine Desaulniers is the younger sister of actress Brie Larson. She is also an educator whose current school profile identifies her as a math teacher and ASB director.

Is Milaine Desaulniers Brie Larson’s biological sister?

Available biographical sources consistently identify Milaine—or Mimsy—as Brie Larson’s younger sister.

Is Mimsy Desaulniers the same person as Milaine Desaulniers?

The evidence strongly supports that conclusion. Larson has referred publicly to her younger sister as Mimsy, IMDb identifies Mimsy as Larson’s sister, other interviews identify the younger sister as Milaine, and public professional records use Raya Milaine Desaulniers.

What does Milaine Desaulniers do?

Current Canyon High School information lists Mimsy Desaulniers as a math teacher and ASB director.

Did Milaine Desaulniers attend the Oscars?

Yes. Editorial records identify Milaine Desaulniers arriving with Brie Larson at the 91st Academy Awards in Hollywood on February 24, 2019.

Did Milaine Desaulniers act in movies?

She has a limited number of acting or video credits under the name Mimsy Desaulniers, including the short film The Arm. Acting, however, does not appear to be her principal profession.

Are Milaine Desaulniers and Brie Larson close?

Public interviews provide evidence of an ongoing sisterly relationship. Larson has repeatedly discussed their shared childhood experiences and their continuing connection through games such as Animal Crossing.

The Bottom Line on Milaine Desaulniers

Milaine Desaulniers is more than an obscure name attached to Brie Larson’s biography. Reliable public information presents her as Larson’s younger sister, a mathematics educator, an ASB director, an occasional participant in creative projects, and someone who has largely built a professional life outside Hollywood.

Her story also offers an interesting counterpoint to celebrity culture. Milaine and Brie Larson shared the same childhood move from Sacramento toward Los Angeles and many of the same formative family experiences, yet their adult careers developed in dramatically different directions.

For anyone researching milaine desaulniers, the most accurate picture is therefore not one built from speculative net-worth estimates or recycled celebrity gossip. It is the simpler, better-supported story of a teacher with a famous sister, a shared family history, and a public profile that remains distinctly her own.