There was a special reason for celebration in Billie Eilish’s family. Her older brother and music producer Finneas O’Connell married his longtime partner, actress Claudia Sulewski.

The couple chose the picturesque San Ysidro Ranch in Santa Barbara, California, as the setting for their wedding. The ceremony was private and intimate, with family members and a select group of celebrity friends in attendance. The guest list included Justin and Hailey Bieber, Nina Dobrev, Kristen Bell, Emma Chamberlain and Jason Sudeikis, according to People.

 

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But it was Billie Eilish who attracted the most attention. The 24-year-old singer had prepared a very special gift for her brother — she personally officiated the ceremony and legally married Finneas and Claudia.

For the special occasion, the Grammy winner opted for an unusually romantic look. She appeared in an olive-green dress featuring a corset, a plunging neckline and off-the-shoulder detailing.

 

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The bride was no less striking. Claudia Sulewski changed into four different Oscar de la Renta looks throughout the wedding day, according to international media.

Finneas, 29, and Claudia, 30, have been together for around eight years. They announced their engagement in September 2025.

Photo: Instagram @finneas

Finneas O’Connell, the brother of Billie Eilish, has decided to bid farewell to his bachelor life. After seven years together, the singer and songwriter proposed to his partner, actress Claudia Sulewski.

The couple shared the joyful news on social media, posting a series of romantic photographs.

«Forever 9.22», they wrote in a joint post.

The pictures also reveal the actress’s stunning engagement ring.

For context: Finneas and Claudia first met on a dating app. In 2019, the musician composed and released the song Claudia just a few hours after their very first meeting. Recently, the couple bought a house in Los Angeles and adopted a pit bull.

Photo: Instagram finneas