Milaine Desaulniers: Biography, Age, Family, Career and Life

Milaine Desaulniers is best known online as the younger sister of actress Brie Larson, but there is more to her story than being part of a famous Hollywood family. While Brie Larson built an international career in movies and became one of the most recognizable actresses of her generation, Milaine has followed a much quieter path, with much of her professional life connected to education.

Her name can be slightly confusing when searched online because she appears under more than one name. Public records and professional sources use Raya Milaine Desaulniers, while school and entertainment-related records use Mimsy Desaulniers. The available records connect these names with the same person and show a career that includes mathematics teaching and student activities.

Unlike her sister, Milaine has not built a large public profile around herself. That makes reliable information about her life more limited, but the records that are available give a useful picture of her family background, career, education-related work, and occasional connection with film.

Milaine Desaulniers Quick Facts

Here is a quick look at the main details commonly associated with Milaine Desaulniers.

The January 5, 1993 birth date and Sacramento birthplace appear in public biographical and family-history records, while the current Canyon High School directory identifies Mimsy Desaulniers as an ASB Director and Math Teacher.

Who Is Milaine Desaulniers?

Milaine Desaulniers is a California-based educator who is publicly known mainly because of her connection to Brie Larson. Her sister was born Brianne Sidonie Desaulniers and later became famous professionally as Brie Larson. IMDb’s family information also identifies Raya Milaine Desaulniers as Brie Larson’s sibling.

That family connection naturally brings attention to Milaine, but her own career has developed in a very different direction. Instead of becoming a full-time actress, she has worked in education and has taken on responsibilities connected with students and school activities.

Her professional identity is particularly interesting because she has appeared in public records under different versions of her name. The name Raya Milaine Desaulniers appears in California employment records, while Mimsy Desaulniers is used by Canyon High School. The school currently lists Mimsy as both a mathematics teacher and ASB director.

This helps explain why searches for Milaine Desaulniers can return information that initially looks like it belongs to different people.

Milaine Desaulniers Age and Birthday

Public biographical sources report that Milaine Desaulniers was born on January 5, 1993, in Sacramento, California. Based on that reported birth date, she is 33 years old in 2026.

Her age is not as frequently discussed in mainstream media as her sister’s because Milaine has maintained a much lower public profile. Most of the information about her comes from professional, entertainment, and family-related records rather than regular celebrity coverage.

It is also worth separating a reported birth date from information that has been directly confirmed through a primary interview or official biography. For that reason, the January 5, 1993 date is best described as the publicly reported date rather than overstating the level of confirmation.

Milaine Desaulniers and Brie Larson

The most recognizable connection in Milaine Desaulniers’ biography is her relationship with Brie Larson.

Brie Larson, whose birth name is Brianne Sidonie Desaulniers, became internationally famous through her acting career. She gained major recognition for films including Room and Captain Marvel, while Milaine remained largely outside the entertainment spotlight.

Brie has spoken publicly about her early family life, including growing up with her younger sister. Family information published through IMDb also lists Raya Milaine Desaulniers among her relatives.

The sisters therefore grew up in the same family, but their professional paths eventually became very different. One moved toward Hollywood acting and filmmaking, while the other developed a career in education.

That difference is one of the reasons people remain curious about Milaine. Being related to a major Hollywood actress could easily have led to a more public lifestyle, yet Milaine’s documented professional work has remained centered on schools and students.

Milaine Desaulniers’ Parents and Family Background

Milaine Desaulniers is the daughter of Heather Desaulniers and Sylvain Desaulniers. Her father is associated with the Desaulniers family name that also appears in Brie Larson’s birth name.

Brie Larson’s biography identifies Heather and Sylvain Desaulniers as her parents and notes that the family had another daughter, Milaine. It also describes Sylvain as having French-Canadian roots and notes the importance of French in the family’s early life.

The family’s background helps explain the French-sounding Desaulniers surname, which later became less familiar to many audiences when Brie adopted the professional name Larson.

Milaine, however, continued to appear publicly under Desaulniers, although the records associated with her career also use the names Raya and Mimsy.

Why Is She Also Called Mimsy Desaulniers?

One of the most common questions surrounding Milaine Desaulniers is why some records call her Mimsy.

The name appears in both professional and entertainment-related sources. Canyon High School currently lists Mimsy Desaulniers as an ASB Director and Math Teacher, while film-related information has also used Mimsy Desaulniers as her credited name.

Meanwhile, California employment records identify a teacher as Raya Milaine Desaulniers. Those records show the name appearing over multiple years within the William S. Hart Union High School District.

The different names can make online research confusing, but they help explain why information about Milaine is scattered across several databases.

For readers searching for her, checking all of these variations can make it much easier to find relevant information.

Milaine Desaulniers’ Career as a Math Teacher

Education appears to be the clearest and best-supported part of Milaine Desaulniers’ professional life.

The official Canyon High School staff directory currently lists Mimsy Desaulniers as an ASB Director and Math Teacher. Her name also appears within the school’s mathematics department.

Her professional record extends back several years. Public employment databases list Raya Milaine Desaulniers as a teacher within the William S. Hart Union High School District, with records appearing from multiple years. A 2017 record identifies her as a teacher, while later records continue to list her in the same general role.

This makes teaching one of the most consistently documented aspects of her career.

Rather than relying only on entertainment websites that describe her through her famous sister, these employment and school records show an independent professional identity. Her work involves education and, based on her current school listing, student activities as well.

Her Role as an ASB Director

Milaine Desaulniers’ work is not limited to teaching mathematics.

As an ASB Director, she is involved with student activities and school life. ASB generally refers to Associated Student Body, which is commonly connected with student leadership, events, activities, and campus programs.

The combination of math teacher and ASB director gives a clearer picture of her professional role. Her work is both academic and student-focused, allowing her to contribute to classroom learning while also supporting activities outside regular lessons. The current Canyon High School staff directory confirms both roles.

A 2020 local report also connected Mimsy Desaulniers with student activities at Valencia High School. The report discussed a Valentine’s Day project organized through ASB, where students placed personalized hearts around campus with positive messages for other students.

That example offers a little more context about the kind of school-community work associated with her role. Rather than simply organizing events, the project focused on making students feel noticed and included.

Did Milaine Desaulniers Work in Film?

Yes, Milaine Desaulniers has a small connection to filmmaking and acting, although there is no strong evidence that she pursued entertainment as her primary career.

She is credited under the name Mimsy Desaulniers in the 2012 short film The Arm, where she played the character Genevieve. The film was co-written and co-directed by Brie Larson along with Jessie Ennis and Sarah Ramos.

Her involvement is interesting because it connects the sisters professionally for a moment. Brie was behind the project creatively, while Milaine appeared in the cast.

However, it would be misleading to describe Milaine primarily as a Hollywood actress. Her documented professional history is much more strongly connected with education, while her film appearances appear limited.

This is an important distinction when researching her biography because some online pages can make a small entertainment credit sound like a full-time acting career.

Milaine Desaulniers and Her Sister’s Creative Interests

Milaine and Brie Larson also share a connection through creative and gaming interests.

Brie has discussed her childhood gaming experiences with her sister, including Nintendo games. Their shared interest became part of their family memories long before Brie became a major Hollywood name.

These details are relatively small compared with Brie’s film career, but they provide some context for the sisters’ relationship. Milaine’s life has not been entirely separate from entertainment or creative work. She simply appears to have kept those interests from becoming the center of her professional identity.

That balance is visible in the available records. Her name can be found in a short film credit and creative material, but her longer professional trail leads back to education.

Milaine Desaulniers’ Education

Information about Milaine’s education is less extensively documented than her teaching career.

Some professional-profile information connects Raya Desaulniers with the University of California, Irvine and education-related studies. Because this type of information is generally self-reported through professional profiles, it should be treated as supporting information rather than the same level of evidence as an official school staff directory.

Her later work as a mathematics teacher does, however, fit with the professional records that identify her in education. Public employment records show her working as a teacher for the William S. Hart Union High School District over multiple years.

A complete academic timeline, including every school she attended and the exact degrees she earned, is not as well documented in primary public sources. It is therefore better to keep those details limited rather than repeat uncertain information.

Milaine Desaulniers’ Life Away From Hollywood

One of the most interesting things about Milaine Desaulniers is how different her public life is from her sister’s.

Brie Larson has spent years appearing in major films, award ceremonies, interviews, and international promotional events. Milaine, on the other hand, has mostly appeared in connection with education, family references, and a small number of creative projects.

This does not necessarily mean that she avoids all public attention. Her school role is publicly listed, and she has appeared in creative work. But there is a clear difference between having a public professional record and building a celebrity career.

Her current school profile is a good example. It presents her in terms of her work as a mathematics teacher and ASB director rather than her family connection to Hollywood.

Is Milaine Desaulniers Married?

There is no sufficiently reliable public information confirming Milaine Desaulniers’ current marital status.

Some biography websites make claims about relationships, marriage, or private family life, but those claims are not consistently supported by strong sources. Since Milaine maintains a relatively private profile, it is better not to turn uncertain personal details into facts.

The same applies to questions about whether she has children or who she may currently be dating. Unless such information is confirmed through a reliable public source, it should remain unconfirmed.

Where Is Milaine Desaulniers Now?

Current professional information places Mimsy Desaulniers at Canyon High School, where the official staff directory lists her as an ASB Director and Math Teacher.

This is more useful than relying on generic biography websites that simply state that she lives in California. A current school directory provides a direct indication of her professional affiliation.

Her private residence and personal day-to-day activities are not reliably documented, so there is no need to speculate about where she lives outside of the publicly listed professional connection.

Milaine Desaulniers’ Public Profile Compared With Brie Larson

The contrast between the sisters can be summarized simply.

The comparison does not suggest that the sisters followed competing paths. It simply shows how two people from the same family developed very different professional identities.

Frequently Asked Questions About Milaine Desaulniers

Who is Milaine Desaulniers?

Milaine Desaulniers is the younger sister of actress Brie Larson. She is also known in some professional and entertainment records as Raya Milaine Desaulniers or Mimsy Desaulniers.

How old is Milaine Desaulniers?

Public records report that she was born on January 5, 1993. If that date is correct, she is 33 years old in 2026.

What does Milaine Desaulniers do?

Milaine Desaulniers works in education. Canyon High School currently lists Mimsy Desaulniers as a mathematics teacher and ASB director.

Is Milaine Desaulniers Brie Larson’s sister?

Yes. Family information for Brie Larson identifies Raya Milaine Desaulniers as her sister.

What is Milaine Desaulniers’ other name?

She is also known as Mimsy Desaulniers, while public employment records use the name Raya Milaine Desaulniers.

Has Milaine Desaulniers acted in a movie?

She has a credited role in the 2012 short film The Arm, in which she played Genevieve under the name Mimsy Desaulniers.

Is Milaine Desaulniers a full-time actress?

The available evidence does not support describing acting as her primary career. Her most consistently documented professional role is in education, including mathematics teaching and student activities.

Where does Milaine Desaulniers work?

The current Canyon High School staff directory lists Mimsy Desaulniers as an ASB Director and Math Teacher.

Final Thoughts

Milaine Desaulniers has an interesting story largely because she took a different route from her famous sister. While Brie Larson became a major Hollywood actress, Milaine developed a professional identity around mathematics education and student activities.

Her name appears in several forms, including Milaine Desaulniers, Raya Milaine Desaulniers, and Mimsy Desaulniers. Once those variations are understood, the available records become much easier to connect. Public employment records document her work as a teacher, while the official Canyon High School directory currently identifies her as both a math teacher and ASB director.

She also has a small connection to film through The Arm, a short project associated with Brie Larson. That part of her story adds an interesting link between the sisters, but it does not define her career.

Overall, Milaine Desaulniers is best understood as a private educator who happens to come from a well-known entertainment family. Her own professional record, particularly her work in mathematics and student activities, gives her a story that stands apart from her sister’s Hollywood career.

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