Oona Gray Seppala turned 18 in October 2025. Most people her age have a public feed, a tagged photo dump, a whole digital paper trail. She has almost none of that, and the few pictures that exist mostly came from her mom’s Instagram on birthdays.
Her mother is Sarah Rafferty, who played Donna Paulsen on Suits for 9 seasons. That show found a second life on Netflix in 2023 and pulled a whole new audience toward the cast and their families. Which is roughly when searches for Oona Gray Seppala started climbing.
So here’s what’s actually documented, what’s guesswork, and what the internet has quietly made up.
Who Oona Gray Seppala is
She’s the elder of Sarah Rafferty’s 2 daughters. That’s the short version, and honestly it covers most of what’s on the record.
The verified basics
- Born October 22, 2007, per PEOPLE’s reporting on the family.
- Parents: actress Sarah Rafferty and Santtu Seppälä, who married in 2001.
- One younger sister, Iris Friday Seppälä, born January 27, 2012.
- American, with Finnish heritage through her father.
What’s floating around unverified
Plenty of aggregator sites describe Oona Gray Seppala as an actress, singer, and dancer with a budding career. I couldn’t find a single credited role, released track, or verified professional listing to back that up. Treat those claims as filler until someone produces a source.
The trail seems to start with one line in Rafferty’s old interviews about her girls loving to sing and dance around the house. Ordinary kid stuff, said about a 6-year-old. Somewhere along the way it got laundered into a career.
- No confirmed screen credits.
- No confirmed talent representation.
- No verified statements from Oona herself in any major outlet.
Bio and quick facts
A snapshot of what’s confirmed, with the softer items flagged as such.
The table
| Detail | Information |
|---|---|
| Full name | Oona Gray Seppälä |
| Date of birth | October 22, 2007 |
| Age in 2026 | 18 |
| Nationality | American, with Finnish family roots |
| Mother | Sarah Rafferty, actress |
| Father | Santtu Seppälä |
| Sibling | Iris Friday Seppälä, born January 27, 2012 |
| Known for | Being Sarah Rafferty’s elder daughter |
| Career | None publicly confirmed |
| Personal net worth | No credible figure exists; she’s a private teenager with no known income |
A note on the numbers you’ll see elsewhere
Some sites list a personal net worth for Oona Gray Seppala. Those numbers are invented. She has no public business, no confirmed acting income, and no reason for anyone outside her family to know her finances.
Her parents and family background
Rafferty and Seppälä married in 2001, 6 years before Oona was born. That’s a long runway before kids by Hollywood standards, and it maybe explains why the family reads as settled rather than chaotic.
Sarah Rafferty
- Played Donna Paulsen across all 9 seasons of Suits.
- Later joined My Life with the Walter Boys on Netflix and appeared on Chicago Med.
- Co-hosts a Suits rewatch podcast with former castmate Patrick J. Adams.
Santtu Seppälä
- Full name Aleksanteri Olli-Pekka Seppälä, though everyone uses Santtu.
- Works in finance, reportedly in venture capital.
- He and Rafferty met at Yale and married in June 2001 in Greenwich, Connecticut.
- Keeps a far lower profile than his wife, with no public social accounts I could verify.
Iris, the younger sister
Iris arrived in January 2012, so Oona had 4 years as an only child. Rafferty told Parents Canada back in 2014 that both girls were outgoing, funny, and constantly singing and dancing around the house. She said they made her laugh every day.
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Growing up between two cities
Suits filmed in Toronto. The family lived in Los Angeles. Do that math across 9 seasons and you get a childhood split across a border.
Two schools, two coasts
- Oona attended school in both LA and Toronto during the show’s run.
- Rafferty admitted in a 2013 Redbook interview that she’d worried about the arrangement.
- She later said it built her daughter’s confidence instead of shaking it, and that Oona came to celebrate the double life.
What set life was actually like
Both girls hung around the Suits production. Rafferty told Univision in 2016 that their favorite stops were the craft services truck, the hair and makeup trailer, and the fittings. She’s described wardrobe photos of her daughters in borrowed couture as some of her favorite keepsakes.
The kids also picked up the vocabulary. Rafferty has said they’d call “action” and “cut” on set, and that they grew close to the cast and their families.
One odd side effect of that closeness: Oona was around a global hit show for most of her childhood without ever really watching it. The set was just where her mom worked, and the actors were adults she knew by first name.
Education and interests
Here’s where I have to be upfront: very little is confirmed.
What we can say
- She was schooled in Los Angeles and Toronto during her mother’s Suits years.
- She’d be around college age in 2026, though no school has been publicly named.
- Rafferty has described both daughters as drawn to singing and dancing, at least as kids.
What we can’t say
Any article claiming to know Oona Gray Seppala’s major, GPA, campus, or career plans is guessing. I’d ignore all of it. Her parents have kept that information private on purpose, and there’s no reason to assume a random blog cracked it.
Worth remembering that Rafferty herself went to Hamilton College and then earned an MFA at Yale School of Drama. If academics matter in that household, they come by it honestly. Whether Oona followed a similar path, took a gap year, or went somewhere else entirely, the family hasn’t said publicly. Rafferty also spent her junior year studying theatre at Oxford, so international schooling isn’t foreign to her either. Any of that could have rubbed off. Or none of it.
The privacy pattern
Rafferty posts her daughters rarely and usually on milestones. Birthdays. The occasional family shot. She’s never done a magazine spread built around the kids, never brought them on a press tour, never traded their faces for coverage.
- The 2020 birthday post marking Oona at 13 is one of the more widely shared images of her.
- Most red carpet appearances Rafferty makes are solo or with her husband.
- Neither daughter has been credited in any of her mother’s projects.
Social media presence
Short answer: there isn’t one worth tracking.
Platform breakdown
| Platform | Status | Notes |
|---|---|---|
| No verified public account | She appears occasionally on her mother’s feed, mostly on birthdays | |
| TikTok | No verified account | Any account using her name should be treated as unconfirmed |
| X (Twitter) | No verified account | Nothing tied to her in reputable coverage |
| Public interviews | None on record | Everything quoted about her comes from her mother |
Why the blank space keeps getting filled in
Silence is a vacuum, and SEO abhors one. Search “oona gray seppala” and you’ll get a stack of near-identical articles padded with adjectives, because the writers had 200 words of facts and a 1,500-word target. That’s the whole business model.
How her mother talks about parenting
Rafferty gives interviews. Her kids don’t. So the entire public record of Oona Gray Seppala’s upbringing is filtered through her mom, and Rafferty has been pretty consistent about it.
The recurring themes
- In 2016 she told Univision she was teaching Oona to be true to herself and to know she could talk to her parents about anything.
- She said she hoped her daughter would move through the world confidently because she felt connected to her family.
- In December 2023 she told PEOPLE her life revolved entirely around her children at that stage.
The Suits irony
Rafferty revealed to New Beauty in 2024 that her daughters never really watched the show. Iris caught a few episodes around age 11 and found it uncomfortable, telling her mom she just wanted her to be her mommy. The girls preferred My Life with the Walter Boys, which Iris apparently predicted would be a hit.
Why searches for her keep climbing
Suits hit Netflix in mid-2023 and broke streaming records. Millions of new viewers went looking for the cast, then the cast’s families, then their kids.
The traffic drivers
- The Netflix surge, which put a decade-old show in front of a teenage audience.
- Rafferty’s steady work since, including My Life with the Walter Boys and the rewatch podcast.
- Oona turning 18 in October 2025, which nudged her into “adult, therefore fair game” territory for content farms.
What the traffic produces
Mostly recycled paragraphs. I read 6 articles about Oona Gray Seppala while writing this, and 5 of them shared the same sentence structures and the same unsourced career claims. Sometimes the same typo.
They also tend to disagree with themselves. One site listed her as 17 in 2026, another as 18, both citing the same October 2007 birthday. Small thing, but it tells you how much checking went into the rest.
Reading coverage about her with a skeptical eye
If you’re researching Oona Gray Seppala, a few filters help.
Red flags in an article
- A specific net worth for a private teenager.
- Career descriptions with zero credits attached.
- Detailed personality analysis with no quoted source.
- Claimed social handles that never link anywhere.
Sources worth trusting
- PEOPLE, which has published dated family reporting.
- Direct interviews with Rafferty in Redbook, Univision, Glamour, and New Beauty.
- Rafferty’s own Instagram captions, which are self-published and dated.
Conclusion
Oona Gray Seppala is an 18-year-old whose mother happens to be famous. She was born in October 2007, grew up shuttling between Los Angeles and Toronto while Suits filmed, has one younger sister, and has never given an interview.
Everything past that is either sourced to Sarah Rafferty or invented by someone chasing search traffic. I’d err toward the first category and skip the second entirely.
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Frequently asked questions
Who Is Oona Gray Seppala?
Oona Gray Seppala is the elder daughter of Suits actress Sarah Rafferty and her husband Santtu Seppälä.
How Old Is Oona Gray Seppala In 2026?
Oona Gray Seppala is 18, having been born on October 22, 2007.
Does Oona Gray Seppala Have Any Siblings?
Oona Gray Seppala has one younger sister, Iris Friday Seppälä, born January 27, 2012.
Is Oona Gray Seppala An Actress?
Oona Gray Seppala has no confirmed acting credits, despite what several unsourced websites claim.
What Is Oona Gray Seppala’s Net Worth?
Oona Gray Seppala has no credible published net worth, and any figure you find is an invented estimate.
Does Oona Gray Seppala Have Instagram?
Oona Gray Seppala has no verified public account on Instagram or any other platform.
Where Did Oona Gray Seppala Grow Up?
Oona Gray Seppala grew up between Los Angeles and Toronto while her mother filmed Suits.
Who Is Oona Gray Seppala’s Father?
Oona Gray Seppala‘s father is Santtu Seppälä, a Finnish-born finance professional who married Sarah Rafferty in 2001.
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