Finneas O’Connell Marries Claudia Sulewski in California Ceremony

Singer Finneas O’Connell wed Claudia Sulewski in a private ceremony in Montecito, California. The wedding was officiated by his sister, Grammy-winning artist Billie Eilish.

30 Aug, 18:30 — 30 Aug, 19:49

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Why this matters

Finneas O’Connell has built a highly successful career as a Grammy-winning musician and producer, largely through his hit-making collaborations with his younger sister, pop superstar Billie Eilish. His marriage to longtime partner and entrepreneur Claudia Sulewski marks a significant personal milestone for the influential sibling duo, who have dominated the music industry since their breakout in the late 2010s. The union draws public attention due to the family's massive cultural footprint and the intimate involvement of Billie Eilish, who officiated the ceremony.

Key entitiesFinneas O'Connell Claudia Sulewski Billie Eilish Montecito CYKLAR Skincare

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Sources

Showing 3 of 5 sources

hollywood-reporterMostly Factual1d ago

Finneas O’Connell and Claudia Sulewski Are Married

The couple got engaged during a romantic sunset proposal last year.

By Carly Thomas

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billboardMostly Factual1d ago

Finneas Marries Claudia Sulewski in Ceremony Officiated by Billie Eilish

The couple tied the knot in California after getting engaged in September 2025.

By Mitchell Peters

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enewsMixed1d ago

Billie Eilish's Brother FINNEAS Marries Claudia Sulewski in Montecito

UPDATE: FINNEAS and Claudia Sulewski are happier than ever. Indeed, Grammy-winning producer—best known for his collaborations with sister Billie Eilish—married the CYKLAR Skincare founder in a...

By Paige Catton,Will Reid

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