Mia Sinclair Jenness is an American actress and voice actress whose voice has been heard by millions of viewers worldwide. She is best known for voicing Nancy Clancy in Disney Junior’s Fancy Nancy and young Powder in Netflix’s Arcane. She began her professional acting career as a child and built steady experience across theater, television, film, and animation.
This article explains Mia Sinclair Jenness age, birthday, career highlights, and net worth using verified public information, offering a clear and simple overview of her growing career.
Mia Sinclair Jenness Age and Birthday
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Mia Sinclair Jenness was born on December 14, 2005.
As of December 2025, she is 20 years old.
Quick Facts About Mia Sinclair Jenness
| Full Name | Mia Sinclair Jenness |
| Date of Birth | December 14, 2005 |
| Age (Dec 2025) | 20 years |
| Birthplace | Millburn, New Jersey, USA |
| Profession | Actress, Voice Actress |
| Years Active | 2012–present |
| Known For | Fancy Nancy, Arcane, Matilda the Musical |
| Net Worth | Estimated $500k–$1 million |
Early Life and Family
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Mia Sinclair Jenness grew up in Millburn, New Jersey, in a family connected to the performing arts. She is the daughter of actress Emily Bauer, which introduced her to acting at a young age.
Her first known stage appearance came in 2012, at just six years old, in the play And a Child Shall Lead. The production focuses on children imprisoned in the Terezin concentration camp and marked a serious and meaningful beginning to her acting journey.
Mia’s brother, Brady Jenness, is also an actor, making performance a shared family path.
Theater Career
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Theater played a major role in Mia’s early career development.
She was selected as one of three rotating lead actresses for the title role in the U.S. tour of Matilda the Musical. The role required strong acting, singing ability, and stamina, giving her national stage exposure at a young age.
She later appeared in the 2014–2015 Broadway production of Les Misérables as part of the ensemble and as an understudy, gaining experience in large-scale musical theater.
In the off-Broadway play Mary Page Marlowe, Mia portrayed the 12-year-old version of the central character, showing her ability to handle emotionally grounded and realistic roles.
Television and Voice Acting Career
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Mia Sinclair Jenness is widely recognized for her voice acting, where she brings emotional depth and realism to young characters.
In 2018, she became the voice of Nancy Clancy in Disney Junior’s Fancy Nancy. She voiced the character until 2022, making her voice familiar to audiences around the world.
She also voiced young Powder in Netflix’s animated series Arcane. The role required expressive and emotional voice work to portray the character’s trauma and vulnerability during childhood.
Her live-action television appearances include:
- Orange Is the New Black
- Blue Bloods
- Raven’s Home
- Better Things
She also played Lily Nill in the pilot episode of the series Panic.
Film Roles
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Mia has worked consistently in both voice roles and on-screen film projects.
Her voice acting includes English-language roles in A Letter to Momo, Under the Shadow, and Child of Kamiari Month. She also provided additional voices for Hotel Transylvania 2.
In live-action film, she appeared in 10 Things We Should Do Before We Break Up and The Storied Life of A.J. Fikry, continuing her transition into more mature roles.
Mia Sinclair Jenness Net Worth
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Mia Sinclair Jenness net worth has not been publicly disclosed.
However, based on her long-term work in theater, television, film, and animation, her net worth is estimated to be between $500,000 and $1 million as of December 2025. This estimate reflects professional acting income rather than endorsements or business ventures.
Her earnings mainly come from:
- Stage performances
- Television roles
- Voice acting contracts
- Film appearances
Personal Life
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Mia Sinclair Jenness is reported to live in Hell’s Kitchen, Manhattan. She keeps a low public profile and does not frequently share personal details, choosing to focus on her professional growth as an actress and voice performer.
Career Highlights
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- Lead role in Matilda the Musical U.S. tour
- Broadway experience in Les Misérables
- Long-running voice role in Fancy Nancy
- Emotional voice performance as young Powder in Arcane
- Career spanning theater, television, film, and animation
Social Media Presence
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Mia Sinclair Jenness maintains a modest and professional presence on social media. She mainly uses these platforms for career updates and public-facing content rather than personal sharing.
As of December 2025, her reported follower counts are:
- Instagram: @miasinclairjenness — 81K followers
- Facebook: Mia Sinclair Jenness — 3.4K followers
- X (formerly Twitter): @MiaJenness — 3.6K followers
- TikTok: @miasinclairjenness — 18.2K followers
FAQs
How old is Mia Sinclair Jenness?
She is 20 years old as of December 2025.
When is Mia Sinclair Jenness’s birthday?
She was born on December 14, 2005.
What is Mia Sinclair Jenness best known for?
She is best known for Fancy Nancy, Arcane, and Matilda the Musical.
What is Mia Sinclair Jenness’s net worth?
Her net worth is not publicly disclosed but is estimated at $500,000 to $1 million as of December 2025.
Is Mia Sinclair Jenness a voice actress?
Yes, she is widely recognized for her voice work in animated series and films.
Conclusion
Mia Sinclair Jenness has built a strong foundation as an actress through early training, discipline, and consistent work across stage and screen. From leading roles in musical theater to emotionally powerful voice performances in animation, she has shown range and professionalism well beyond her age. As her career continues to grow, Mia remains a respected and reliable performer whose work continues to connect with audiences worldwide.
Information in this article is based on publicly available interviews, verified entertainment databases, and credited productions.
If you’re interested in learning about other actresses with strong theater and screen backgrounds, you can also read our detailed profile on Oona Chaplin.
