Finneas and Claudia Sulewski Wed in Montecito with Billie Eilish Officiating
Finneas O'Connell and Claudia Sulewski married on August 29, 2026, at San Ysidro Ranch in Montecito, California. Billie Eilish officiated the ceremony, wearing an olive-green dress and visibly emotional during her brother's vows. Sulewski wore four custom Oscar de la Renta outfits, including an ivory ball gown for the ceremony. The guest list featured Justin and Hailey Bieber, Dax Shepard, Kristen Bell, and Nat Wolff.
Key points
- Billie Eilish officiated her brother Finneas' wedding to Claudia Sulewski at San Ysidro Ranch in Montecito, California, on August 29, 2026.
- Sulewski wore four custom Oscar de la Renta outfits, including an ivory silk faille ceremony ball gown with a drop-waist bodice and a pink after-party gown.
- The couple began dating in 2018 after meeting on a dating app and got engaged in September 2025.
- Guests included Justin and Hailey Bieber, Dax Shepard, Kristen Bell, Nina Dobrev, Emma Chamberlain, Jason Sudeikis, and Billie Eilish's boyfriend Nat Wolff.
- The couple's rescue dogs, Peaches and Moose, served as flower dogs wearing matching silk bows.
Background
Finneas and Billie Eilish have a close professional and personal bond, with Finneas co-writing and producing all of Eilish's projects. In April 2026, Eilish addressed rumors of a falling out after Finneas skipped her 2024-2025 tour, explaining he preferred not touring but missed her during her months-long absence. In July 2026, the siblings honored Glen Hansard, crediting his music with shaping their artistry.
How outlets are covering it
Page Six emphasized the emotional moment of Eilish officiating, noting she wiped away tears and laughed during the ceremony. Vogue focused on the fashion details, documenting Sulewski's four Oscar de la Renta looks and her FaceTime reaction to the final fitting. Yahoo highlighted the celebrity guest list, particularly Justin and Hailey Bieber's presence.
Why it matters
The wedding highlights the close bond between Billie and Finneas Eilish, who have collaborated on all her award-winning projects. It also showcases Sulewski's public profile as a beauty founder and her choice of sustainable fashion, with her reception dress featuring upcycled feathers.
What to watch
The couple is expected to begin their married life together, with Sulewski continuing her work as a beauty founder and Finneas returning to his music career. No further public events have been announced.
- Billie Eilish officiates brother Finneas’ star-studded wedding to Claudia Sulewski Page Six
- Finneas Is Married! Music Producer Marries Longtime Girlfriend Claudia Sulewski in Montecito People.com
- Claudia Sulewski and Finneas Are Married! Inside the Bride’s Final Fitting at Oscar de la Renta Vogue
- Billie Eilish Stuns in Off-the-Shoulder Corset Dress and Bold Lipstick While Officiating Brother Finneas’s Wedding instyle.com
- Justin Bieber Snaps Glam Selfies with Wife Hailey at Finneas and Claudia Sulewski’s Wedding Yahoo
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