Billie Eilish Officiates Brother Finneas’ Star-Studded Wedding

By the Editorial Team · Tuesday, September 1, 2026

Billie Eilish officiated the wedding of her brother Finneas O’Connell and Claudia Sulewski at San Ysidro Ranch, attended by numerous celebrities including Justin and Hailey Bieber. The event highlighted a blend of personal family emotion and high-profile guests, underscoring the couple’s close ties to the entertainment world.

Billie Eilish served as the officiant at her brother Finneas O’Connell’s wedding to Claudia Sulewski on Saturday. The ceremony took place at San Ysidro Ranch in Santa Barbara, California, with numerous celebrities in attendance.

The 24-year-old singer wore an olive-green dress as she stood between the couple during the outdoor event. Photographs from the wedding capture moments of emotion, including Eilish wiping away tears as Finneas recited his vows, followed by a joyful laugh. Finneas was dressed in a classic black suit, while Sulewski wore a gown by Oscar de la Renta.

Guests at the ceremony included high-profile figures such as Justin and Hailey Bieber, actors Dax Shepard and Kristen Bell, Nina Dobrev, Emma Chamberlain, Jason Sudeikis, as well as Carter Gregory, Stassie Karanikolaou, and Rachel Sennott. The wedding combined intimate family moments with a gathering of prominent friends in the entertainment industry.

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