Finneas O’Connell and Claudia Sulewski got married this past weekend in a ceremony in Montecito, California, with the groom’s sister, Billie Eilish, officiating. The wedding has sent fans searching for more background on Sulewski, a YouTuber, actress and skincare founder who has been with Finneas since 2018, including questions about where she comes from and who raised her.
Here is what is publicly known about Claudia Sulewski’s parents, her family background, and the relationship that led to Saturday’s ceremony.
Who Is Claudia Sulewski?
Sulewski was born on February 19, 1996, in Chicago, Illinois. She built an early online following as a beauty and lifestyle vlogger, starting a YouTube channel around 2009 under the username BeyondBeautyStar when she was still a young teenager. She later became a regular host for Teen Vogue’s YouTube channel after relocating to Los Angeles in 2014.
Her main channel has since grown to more than 2.4 million subscribers, and she has built a presence across Instagram and TikTok as well. In 2023, she launched Cyklar, a body care brand, adding entrepreneur to a resume that already included hosting and acting.
Who Are Claudia Sulewski’s Parents?
Claudia Sulewski is the daughter of Beata Krupińska Sulewski and Czesław Sulewski, both Polish immigrants who settled in the Chicago area. According to Czesław’s LinkedIn profile, he serves as president of Above and Beyond Construction Group, a contracting business that has served Park Ridge, River Grove and the wider Chicagoland area for roughly twenty-five years.
The company’s own website lists Beata as a project manager there as well, suggesting the business has long been something of a family operation. Beata also keeps a personal Instagram profile with a modest public following.
View this post on Instagram
Sulewski has spoken about her parents with visible affection, crediting her father’s work ethic and her mother’s creative streak for shaping her own path. In comments to People, she reflected on how unusual her early YouTube career must have looked to two immigrant parents unfamiliar with online video as a livelihood, saying, “I’m seriously so grateful for them.”
She explained that they were remarkably open to what she described as a strange and unfamiliar way of making money, and that their attitude shifted once her channel actually started generating income, at which point she felt she had their full blessing to pursue it seriously.
Claudia Sulewski’s Siblings and Upbringing
Sulewski has two brothers, Kevin and Marcin, making her the only daughter in the family. She was raised in Park Ridge, a suburb of Chicago, and by several accounts attended Maine South High School. The household was bilingual, with Polish spoken at home alongside English, and Sulewski has said she attended Polish school every Saturday until eighth grade.
She was also raised Catholic, in a home that stayed closely connected to its Polish heritage even as the children grew up thoroughly Midwestern. That immigrant, close-knit upbringing is something Sulewski has pointed to repeatedly when asked about the discipline and work ethic behind her career.
Also Read: Novak Djokovic Reveals Wife Jelena Dated Tennis Rival, Calls It Uncomfortable
How Claudia Sulewski Met Finneas O’Connell
Sulewski and O’Connell met on a dating app in 2018. According to a BuzzFeed interview O’Connell gave in 2019, the connection was immediate enough that he wrote a song about her before their relationship had even properly begun. “I wrote the song ‘Claudia’ about Claudia the day that I met Claudia,” he said, adding that he sent her the first part that same night. He later wrote his 2022 track “Mona Lisa, Mona Lisa” with her in mind as well, and Sulewski went on to direct the music video for that song herself, filming part of it in Paris.
By Sulewski’s own account, the relationship clicked quickly in part because the two already shared a friend group before they ever matched, which made the early days of dating feel less like starting from scratch and more like a natural continuation of people who were already meant to know each other.
The Proposal and Engagement
O’Connell proposed to Sulewski on September 22, 2025, during a sunset proposal, presenting her with a vintage-style cushion-cut diamond ring. The couple announced the engagement two days later with a joint Instagram post captioned “Forever and ever 9.22.” Speaking with PEOPLE about the proposal shortly afterward, O’Connell admitted the lead-up had worn on him more than the moment itself.
“That was a real sigh of relief when that all worked out,” he said, describing weeks of lying awake at night trying to get the details right. He also said he planned to let Sulewski take the lead on planning the wedding itself, positioning himself as her hype man rather than a co-planner with strong opinions of his own.
Inside Finneas and Claudia’s Montecito Wedding
Finneas and Sulewski married on Saturday, August 29, in an outdoor ceremony in Montecito, California, with Billie Eilish officiating the proceedings. According to Vogue, which followed Sulewski through her final dress fittings ahead of the big day, the bride wore four custom Oscar de la Renta looks across the wedding weekend, covering the rehearsal dinner, the ceremony itself, the reception and the after-party.
The guest list reportedly included Justin and Hailey Bieber, Jason Sudeikis, Kristen Bell and Dax Shepard, Nina Dobrev, Rachel Sennott, Emma Chamberlain and Eilish’s own boyfriend, Nat Wolff. In the run-up to the wedding, Sulewski spoke with Harper’s Bazaar about how consuming the planning process had been, joking that it had cut into her usual hobbies. “I’ve really been off my reading game,” she said, while also mentioning a growing personal interest in health and fertility as she looks toward the next stage of her life.
Claudia Sulewski’s Career Beyond YouTube
Sulewski’s career has expanded well past her original vlogging roots. She made her wide-release film debut in the 2022 movie I Love My Dad, which premiered at South by Southwest, and has since appeared in Marvel’s Runaways, the Apple TV+ series Shrinking, and earlier web series including T@gged and The Commute.
Her skincare brand, Cyklar, launched in 2023 and is marketed as gender-inclusive body care. She has also stepped behind the camera for her husband’s music, directing the videos for his songs “Mona Lisa, Mona Lisa” and “2001.”
Who Is Finneas O’Connell?
Finneas, born Finneas O’Connell, is best known as Billie Eilish’s older brother and closest musical collaborator, co-writing and producing the songs that made her a global star, including “Bad Guy,” “Birds of a Feather” and “What Was I Made For?”
His production work with Eilish has earned him multiple Grammy Awards, including Record of the Year in 2020, along with two Academy Awards for Best Original Song. Beyond his work with his sister, he records solo material under his own name and performs as part of the duo The Favours alongside singer-songwriter Ashe.
Frequently Asked Questions
Who are Claudia Sulewski’s parents?
Her parents are Beata Krupińska Sulewski and Czesław Sulewski, Polish immigrants based in the Chicago area. Czesław is president of Above and Beyond Construction Group, a family-run contracting business, where Beata is listed as a project manager.
Does Claudia Sulewski have siblings?
Yes. She has two brothers, Kevin and Marcin, making her the only daughter in the family.
How did Claudia Sulewski meet Finneas?
The two met on a dating app in 2018. Finneas has said he wrote his song “Claudia” the same night they met.
When did Finneas and Claudia Sulewski get married?
They married on Saturday, August 29, in an outdoor ceremony in Montecito, California, officiated by Finneas’ sister, Billie Eilish.
Where did Claudia Sulewski grow up?
She grew up in Park Ridge, Illinois, a suburb of Chicago, in a bilingual, Polish-American household.
What is Claudia Sulewski known for?
She is known as a YouTuber and beauty content creator, a former Teen Vogue host, an actress with credits including I Love My Dad and Shrinking, and the founder of the skincare brand Cyklar.
Also Read: Trump Threatens NBC’s Kristen Welker With FCC Over Mixed Results Comment
Last Updated on August 31, 2026 by 247 News Around The World
