Milaine Desaulniers, also known as Raya Milaine Desaulniers and Mimsy Desaulniers, is an American mathematics teacher and student activities director who is publicly known as the younger sister of Academy Award-winning actress Brie Larson. Although her family connection has attracted interest from entertainment audiences, her own professional record points primarily to education rather than a full-time career in Hollywood.

Official school directories identify Mimsy Desaulniers as a mathematics teacher and Associated Student Body (ASB) director. Public education employment records also document work under the name Raya Milaine Desaulniers, while entertainment databases credit Mimsy Desaulniers in several small creative projects, including the short film The Arm, which Brie Larson co-directed.

This combination makes Milaine’s biography more interesting than a simple account of being related to a celebrity. She grew up alongside a future Hollywood star, experienced the family’s move from Sacramento to Los Angeles, participated in creative projects, and developed a separate career working with students.

For readers curious about her life, the strongest available information concerns her family background, educational work, limited film appearances, and publicly documented connection with her sister. Other details, particularly her exact birth date, financial circumstances, and private relationships, require greater caution.

Who Is Milaine Desaulniers?

Milaine Desaulniers is the younger sister of actress Brie Larson, whose birth name is Brianne Sidonie Desaulniers.

Although the sisters share the same family background, they followed different professional paths.

Brie became a widely recognized film actress, eventually winning the Academy Award for Best Actress for her performance in Room and joining the Marvel Cinematic Universe as Carol Danvers in Captain Marvel.

Milaine, meanwhile, established a career in education.

The Canyon High School staff directory identifies Mimsy Desaulniers as both an ASB director and a mathematics teacher. Public employment records also identify Raya Milaine Desaulniers as a teacher in the William S. Hart Union High School District.

Entertainment records connect the name Mimsy Desaulniers with a small number of film and video projects.

Together, these sources support a biography centered on teaching, student leadership, occasional creative work, and her family connection to Brie Larson.

Milaine does not maintain the same public celebrity profile as her sister. Most detailed coverage of her life comes from Brie Larson’s interviews, educational records, and limited entertainment credits.

Milaine Desaulniers: Quick Biography

Detail	Information
Full name	Raya Milaine Desaulniers
Common name	Milaine Desaulniers
Also known as	Mimsy Desaulniers
Known for	Mathematics teaching and being Brie Larson’s younger sister
Sister	Brie Larson
Parents	Heather and Sylvain Desaulniers
Profession	Mathematics teacher and student activities director
School affiliation	Canyon High School
School district	William S. Hart Union High School District
Film credit	The Arm
Other screen credits	The Dew Project and Releasing My First Short Film, Warning: Childhood Cringe
Reported birth year	1993
Exact date of birth	Not independently confirmed
Personal net worth	No reliable estimate established

Milaine’s teaching work and family connection are better documented than many of the personal details that appear in recent celebrity biographies.

Milaine Desaulniers’ Early Life

Milaine grew up in California with her older sister, Brie Larson.

Their parents, Heather and Sylvain Desaulniers, worked as chiropractors.

The family initially lived in Sacramento, where Brie developed an early interest in acting.

Brie was born on October 1, 1989. Milaine is younger, although her precise birth date is not consistently established in authoritative biographical references.

The sisters’ childhood changed significantly when their parents separated.

Their mother moved with both daughters to Los Angeles, where Brie began pursuing acting opportunities.

The move became an important part of the family’s story because it happened before Brie achieved professional success.

Growing Up in Sacramento

Sacramento was an important setting in the sisters’ early childhood.

The family lived there before Heather relocated with the children to Southern California.

Brie has discussed her early interests in acting and filmmaking, including making home movies and performing for family members.

However, much less has been published about Milaine’s individual childhood interests.

It would be inaccurate to assume that she had identical ambitions simply because they grew up together.

What is documented is that the sisters shared a family environment that eventually became closely connected with the entertainment industry.

Moving to Los Angeles

The move to Los Angeles is one of the clearest events in the family’s early history.

In interviews, Brie Larson has described arriving in Los Angeles with her mother and younger sister when she was approximately seven years old.

They lived in a small studio apartment with limited possessions.

The apartment had a foldaway bed, and the family faced financial difficulties.

Brie has described those years as both challenging and memorable.

Her mother was raising two children while supporting an uncertain acting career.

For Milaine, the move meant growing up in the same household during a period of significant family change.

However, the public accounts primarily reflect Brie’s memories. Milaine’s own private interpretation of those experiences is not extensively documented.

Who Are Milaine Desaulniers’ Parents?

Milaine’s parents are Heather Desaulniers and Sylvain Desaulniers.

Both have been described in major profiles of Brie Larson as working in chiropractic care.

The family surname reflects its French-Canadian connections through Sylvain.

Brie has explained that she used a different professional surname because Desaulniers was difficult for some people to pronounce.

Milaine continued to be publicly identified by the family surname, although the name Mimsy also appears in professional and entertainment records.

Heather Desaulniers

Heather played a central role in the family’s move to Los Angeles.

When Brie expressed an interest in acting, Heather supported her daughter’s efforts and accompanied both children to Southern California.

The relocation became longer-term than initially anticipated.

In interviews, Brie has described the financial difficulties her mother experienced while supporting the family.

These accounts help establish the environment in which Milaine grew up.

However, they should not be used to invent private conversations or personal experiences that Milaine has not independently described.

Sylvain Desaulniers

Sylvain Desaulniers is the father of Brie and Milaine.

He worked in chiropractic care and has French-Canadian family roots.

The parents’ separation occurred during the sisters’ childhood.

Public interviews about this period largely come from Brie Larson.

Because Milaine has not provided an extensive public account of her relationship with her father, conclusions about their private family dynamics would be speculative.

What Does Milaine Desaulniers Do for a Living?

Milaine Desaulniers’ best-documented professional work is in education.

Official school information identifies Mimsy Desaulniers as a mathematics teacher and Associated Student Body director.

The combination of these responsibilities involves both classroom instruction and student activities.

Mathematics teaching focuses on helping students understand numerical concepts, mathematical reasoning, and problem-solving techniques.

Student leadership work involves supporting organized school activities and opportunities for students to participate in campus life.

These are distinct responsibilities that can complement one another.

A teacher working in both areas may contribute to academic learning while also supporting school culture and student involvement.

Her Mathematics Teaching Career

Public employment records identify Raya Milaine Desaulniers as a teacher in the William S. Hart Union High School District.

The records cover several years and are consistent with educational reporting involving Mimsy Desaulniers.

Her teaching career is therefore supported by documentation beyond celebrity biography websites.

That matters because some online profiles emphasize her connection to filmmaking without adequately explaining her principal profession.

While she has limited screen credits, the more substantial public employment record concerns secondary education.

Canyon High School

Canyon High School’s official staff directory lists Mimsy Desaulniers as an ASB director and mathematics teacher.

Her name appears in both student activities and mathematics staff information.

This provides a direct institutional reference for her professional role.

It does not establish every assignment she has completed or every school where she has worked.

However, it offers a clearer and more reliable description of her work than general statements about choosing a life away from Hollywood.

Her Earlier Work at Valencia High School

Milaine was also publicly identified as a mathematics teacher and ASB director at Valencia High School.

A February 2020 local news report described a student-led Valentine’s Day initiative in which positive messages were displayed across campus.

The project was organized by the school’s Associated Student Body.

The report identified Mimsy Desaulniers as the mathematics teacher and ASB director involved with the activity.

This contemporary coverage demonstrates that her role extended beyond classroom teaching.

It included supporting students as they organized activities intended to strengthen the school community.

Milaine Desaulniers and Student Leadership

One of the most distinctive aspects of Milaine’s professional record is her involvement with student government and campus activities.

An Associated Student Body program commonly gives students opportunities to participate in event planning, school representation, and organized activities.

The responsibilities of an ASB director vary by school.

Generally, the role includes advising students, coordinating activities, and helping student representatives carry out projects.

Milaine’s public school role identifies her as someone working within this area of education.

The Valentine’s Day Project

In February 2020, The Santa Clarita Valley Signal reported on an initiative at Valencia High School involving hundreds of paper hearts displayed for students.

The messages were designed to help members of the school community feel recognized and appreciated.

Mimsy Desaulniers was identified in the report as the ASB director.

The activity provides a specific documented example of her professional involvement.

Rather than merely assigning her a general label such as educator, the event shows participation in a student-led community project.

Why This Work Matters

Teaching and student leadership contribute to different aspects of school life.

Academic instruction supports subject knowledge and learning.

Student activities can provide opportunities for cooperation, communication, organizational experience, and participation in a wider community.

Milaine’s documented responsibilities involve both areas.

This professional identity deserves recognition independently of her sister’s achievements.

Is Milaine Desaulniers an Actress?

Milaine has a small number of entertainment credits under the name Mimsy Desaulniers.

However, describing her primarily as a full-time actress would overstate the available evidence.

IMDb identifies her with the short film The Arm, The Dew Project, and a project titled Releasing My First Short Film, Warning: Childhood Cringe.

These credits establish involvement in filmed entertainment.

They do not establish a sustained professional acting career comparable to Brie Larson’s.

Her Role in The Arm

The Arm is a short film co-directed by Brie Larson, Jessie Ennis, and Sarah Ramos.

Entertainment databases credit Mimsy Desaulniers with playing the character Genevieve.

The film concerns a teenage relationship involving text messaging and explores the consequences of distracted driving.

Her role provides a documented connection between Milaine and a creative project involving her sister.

This is more specific than simply stating that she has worked in Hollywood.

It identifies an actual production and a credited character.

Other Creative Projects

IMDb also associates Mimsy Desaulniers with The Dew Project and Releasing My First Short Film, Warning: Childhood Cringe.

These additional credits indicate some creative activity beyond The Arm.

However, public documentation does not support describing her as a prolific filmmaker or major entertainment personality.

There is no substantial feature-film career, long-running television role, or major awards history established under her name.

Her work in education remains the stronger documented professional identity.

Why Does Milaine Use the Name Mimsy?

Milaine is identified by multiple forms of her name in public records.

IMDb lists Brie Larson’s sibling as Raya Milaine Desaulniers.

Entertainment credits use Mimsy Desaulniers.

School staff listings also use Mimsy Desaulniers.

This suggests that Mimsy is an established name she uses in at least some professional and creative settings.

However, the exact origin of the name and why she adopted it are not documented in the principal sources reviewed.

A biography should therefore avoid inventing a childhood nickname story.

The relevant fact is that the names appear in different public records associated with the same individual.

Milaine Desaulniers and Brie Larson’s Relationship

Brie Larson’s connection with her younger sister has occasionally appeared in interviews and entertainment coverage.

The sisters shared important childhood experiences, particularly the move to Los Angeles and their early years living with their mother.

As adults, their career paths diverged.

Brie became an internationally recognized actress.

Milaine established a professional life centered on education.

Despite these differences, public references show that they have maintained personal and creative connections.

Their relationship is best understood through the documented examples rather than assumptions about their private conversations or family routines.

Sharing Childhood Experiences

Brie has repeatedly spoken about growing up with her younger sister and mother in a small Los Angeles apartment.

In a 2016 interview, she connected those memories with her performance in the film Room.

The actress explained that revisiting childhood circumstances helped her think differently about her mother’s experiences.

Her account provides an important historical perspective on the family’s life.

However, the experience was described from Brie’s point of view.

It should not be assumed that Milaine remembers every event in the same way.

Creative Collaboration

The short film The Arm provides a documented example of their professional worlds intersecting.

Brie participated in directing the film, while Mimsy appeared in the cast.

This is a concrete connection between the sisters’ creative interests.

It demonstrates some collaboration without establishing that they regularly work together in entertainment.

Different Professional Choices

The sisters’ different careers are among the most notable features of their public biographies.

Brie works primarily in entertainment.

Milaine’s identified employment centers on mathematics education and student leadership.

Their paths demonstrate that people from the same family can pursue very different forms of professional work.

One person’s public celebrity does not determine the career or public identity of a sibling.

Brie Larson’s Hollywood Career

Brie Larson began acting at a young age and gradually developed a career in film and television.

She appeared in projects such as United States of Tara, Short Term 12, and The Spectacular Now before achieving major critical recognition.

Her performance in <Entity category=”movie” value=”Room” disambig=”2015 drama film”/> earned her the Academy Award for Best Actress.

She later portrayed Carol Danvers in <Entity category=”movie” value=”Captain Marvel” disambig=”2019 Marvel Studios film”/>.

These achievements brought greater attention to Brie Larson’s family background.

As audiences became interested in her early life, the name Milaine Desaulniers appeared more frequently in biographical searches.

However, Brie’s awards and film achievements belong to her professional career and should not be attributed to Milaine.

The connection explains public interest but does not replace Milaine’s own biography.

Has Milaine Desaulniers Appeared at Hollywood Events?

Some entertainment coverage and photographs associate Milaine with appearances alongside Brie Larson.

The 2019 Academy Awards are frequently mentioned in recent biographies.

However, individual photographs should be authenticated before being used to identify Milaine, particularly when public image captions focus on Brie or other attendees.

Being related to an Oscar-winning actress can provide access to occasional entertainment events.

It does not establish that Milaine regularly attends premieres, participates in publicity campaigns, or pursues celebrity status.

Her documented professional work remains outside the main film industry.

Milaine Desaulniers’ Education

Milaine’s professional role as a mathematics teacher is documented.

However, her exact academic qualifications and graduation history are not consistently established through authoritative educational records reviewed for this article.

Some online biographies associate her with California-based higher education.

Others provide little information about her formal qualifications.

A school employment listing does not automatically establish a particular degree or graduation date.

For that reason, it is preferable to describe her verified teaching career without inventing an academic timeline.

If a verified professional biography or university record becomes available, those details can be added.

Milaine Desaulniers’ Age and Birthday

Several recent online biographies report that Milaine Desaulniers was born on January 5, 1993.

If that date is correct, she would be 33 years old in October 2026.

However, the exact birthday has not been independently confirmed through the strongest sources used for this article.

Her status as Brie Larson’s younger sister is well established.

The available childhood timeline also indicates that Milaine was several years younger than Brie during the family’s move to Los Angeles.

Those facts provide general age context without requiring an unverified exact birth date.

A precise birthday should not be presented as certain solely because it appears on multiple recent biography websites.

Is Milaine Desaulniers Married?

Milaine’s marital or relationship status has not been reliably established through the public sources reviewed.

There is no clear basis for assigning a spouse, wedding date, or current romantic partner.

The absence of such information does not mean she is necessarily unmarried.

It means that her private relationship history is not sufficiently documented for a definitive public statement.

Readers should distinguish between professional public records and personal details that an individual has not publicly confirmed.

Does Milaine Desaulniers Have Children?

There is no sufficiently reliable public information establishing whether Milaine Desaulniers has children.

Some recent online biographies discuss her private family life, but the available evidence does not support a complete account.

A person can have a documented professional career and recognizable family connections without publishing details about their own household.

It would be inappropriate to invent those details or infer them from social-media material belonging to people with similar names.

What Is Milaine Desaulniers’ Net Worth?

No credible, independently verified net-worth estimate has been established for Milaine Desaulniers.

Public employment records document teacher compensation for an individual listed as Raya Milaine Desaulniers.

However, employment compensation is not the same as personal wealth.

Net worth depends on assets, liabilities, savings, investments, and other financial circumstances.

Her sister’s Hollywood income also provides no valid basis for calculating Milaine’s finances.

For this reason, publishing a precise personal net-worth figure would create an unsupported impression of accuracy.

Where Is Milaine Desaulniers Today?

As of October 2026, Canyon High School’s publicly accessible staff directory lists Mimsy Desaulniers as a mathematics teacher and ASB director.

This is a meaningful current professional reference.

It provides a more reliable answer about her publicly documented activities than speculation about private routines or personal circumstances.

Her exact residence and personal schedule are not necessary to explain her career.

The public record establishes a professional connection with education in Southern California, along with a limited history of creative work.

Why Are People Interested in Milaine Desaulniers?

Interest in Milaine comes largely from curiosity about Brie Larson’s family.

Audiences who discover an actor’s early life often want to know more about siblings, parents, and childhood experiences.

Milaine is particularly interesting because her public identity differs from the celebrity environment associated with her sister.

Rather than developing a major entertainment career, she has a documented record of work in schools.

Her occasional film credits add another dimension to that story.

The result is a biography involving both entertainment and education, without requiring assumptions that she has intentionally rejected fame or followed a predetermined lifestyle.

Frequently Asked Questions

Who is Milaine Desaulniers?

Milaine Desaulniers, also known as Raya Milaine Desaulniers and Mimsy Desaulniers, is the younger sister of actress Brie Larson. She is publicly identified as a mathematics teacher and ASB director.

Is Milaine Desaulniers the same person as Mimsy Desaulniers?

Yes. The names appear in family, school, and entertainment records associated with Brie Larson’s younger sister.

What does Milaine Desaulniers do for a living?

Her documented professional work is in education. Canyon High School lists Mimsy Desaulniers as an ASB director and mathematics teacher.

Did Milaine Desaulniers appear in a movie?

She is credited as Genevieve in the short film The Arm, which was co-directed by Brie Larson, Jessie Ennis, and Sarah Ramos.

How old is Milaine Desaulniers?

Several online biographies report a January 5, 1993, birth date, which would make her 33 in October 2026. However, the exact date has not been independently confirmed.

Who are Milaine Desaulniers’ parents?

Her parents are Heather and Sylvain Desaulniers, who have been identified in established reporting as chiropractors.

Is Milaine Desaulniers a full-time actress?

Her available public professional record is primarily associated with teaching. Although she has several screen credits, there is insufficient evidence to describe acting as her principal full-time career.

Is Milaine Desaulniers married?

Her marital status has not been reliably confirmed in the sources reviewed.

Where does Milaine Desaulniers work?

Canyon High School’s official directory lists her as a mathematics teacher and ASB director.

Final Thoughts

Milaine Desaulniers is known to many readers because she is Brie Larson’s younger sister, but her documented professional life is centered on education.

As Raya Milaine Desaulniers or Mimsy Desaulniers, she appears in school employment records, official staff directories, and a small number of entertainment credits.

Her family’s move to Los Angeles provides an important connection to Brie Larson’s early acting career, while her later work as a mathematics teacher and student activities director establishes a distinct professional identity.

Her appearance in The Arm adds a documented creative connection with her sister, but it does not define her overall career.

The strongest available biography is therefore one that recognizes both aspects of her public life without inventing personal stories or unsupported achievements.

Milaine’s career illustrates that a person can share a family connection with a major Hollywood figure while building an independent professional life in an entirely different field.

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