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Billie Eilish officiates brother Finneas’ star-studded wedding to Claudia Sulewski

By Blendy Writer
August 31, 2026 4 Min Read
Comments Off on Billie Eilish officiates brother Finneas’ star-studded wedding to Claudia Sulewski

Billie Eilish officiated her brother Finneas’ star-studded wedding to Claudia Sulewski on Saturday.

The “Birds of a Feather” singer, 24, wore an olive-green dress as she stood between the bride and groom at San Ysidro Ranch in Santa Barbara, California, per photos obtained by Page Six.

At one point, she was seen wiping at her eyes while her brother read his vows, before laughing wholeheartedly.

For their special day, Finneas wore a classic black suit, while Sulewski stunned in an Oscar de la Renta dress.

Billie Eilish officiated her brother Finneas’ wedding to Claudia Sulewski in Santa Barbara, California on Saturday. CPR/D.Sanchez / BACKGRID
Eilish (seen above with the couple) wore an olive green dress to the ceremony. CPR/D.Sanchez / BACKGRID
Eilish was seen smiling and wiping away tears during the ceremony. BACKGRID
The Grammy Award winner read from a book as she officiated the wedding. BACKGRID

During the outdoor ceremony, the couple said their “I do’s” in front of Justin and Hailey Bieber, Dax Shepard and Kristen Bell, Nina Dobrev, Emma Chamberlain, Jason Sudeikis, Carter Gregory, Stassie Karanikolaou and Rachel Sennot.

Eilish’s boyfriend, Nat Wolff, also made an appearance.

Sulewski, who started dating Finneas in 2018 after meeting on a dating app, told Vogue that she wore four Oscar de la Renta dresses at her wedding, with her favorite look being her off-the-shoulder ceremony ball gown with a drop-waist bodice.

Finneas (seen above during the ceremony) wore a classic black suit. CPR/D.Sanchez / BACKGRID
Sulewski wore an Oscar de la Renta wedding dress to the ceremony. CPR/D.Sanchez / BACKGRID
The couple held hands after they said “I do” as Eilish stood between them. CPR/D.Sanchez / BACKGRID
The celebrities in attendance included Justin and Hailey Bieber, Dax Shepard, Kristen Bell, Jason Sudeikis, Nina Dobrev and more. CPR/D.Sanchez / BACKGRID

“We were putting it on, and I was saying, there’s something about this dress that just demands a moment of silence,” the 30-year-old told Vogue in a final dress fitting ahead of the wedding.

Eilish attended the dress fitting virtually, gushing over her now-sister-in-law during a FaceTime call.

“My God, I can’t believe it,” the Grammy winner said, per Vogue. “You look like an angel. Sorry to be interrupting. Love you so much.”

Eilish’s boyfriend, Nat Wolff, was also at the wedding. CPR/D.Sanchez / BACKGRID
Eilish (seen here) has a close bond with Finneas, who is also her music collaborator. Dsanchez/CPR / BACKGRID
Finneas has worked with Eilish (pictured here) on all her award-winning projects. BACKGRID

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Eilish officiating her brother’s wedding seemed fitting due to the close bond they share, with him serving as her co-writer and producer on all her projects.

However, after Finneas didn’t join his sister on her 2024-2025 “Hit Me Hard and Soft” Tour, Eilish spoke out against the rumors that the siblings had a falling out.

“It was a few years in the making,” she told Elle in April. “We got so busy that we would only see each other right before going on stage.”

“Finneas and Andrew [Marshall, her touring drummer], who were the only band members I had back in the day, performed on some sort of platform that was hard to leave,” she continued. “Finneas was stuck in a tower—like Rapunzel!”

Finneas and Sulewski (seen here) started dating in 2018 after meeting on a dating app. CPR/D.Sanchez / BACKGRID
The couple (pictured here) got engaged in September 2025. CPR/D.Sanchez / BACKGRID

Eilish added of Finneas, “He never said it, but I was feeling like, ‘You have more to be doing than being my band member in the back.’”

Finneas, for his part, told Elle that he agreed to skip her tour, saying, “It’s basically true that I don’t like touring, but I love the show part of it.”

“And I love being around Billie,” the 29-year-old added. “This past year, when she would be on tour for months, I missed her a lot.”

Sulewski (pictured here with Finneas) wore four wedding looks designed by Oscar de la Renta for the wedding weekend, according to Vogue. Getty Images
Eilish FaceTimed in during Sulewski’s dress fitting prior to the wedding. claudiasulewski/instagram

Back in 2020, Finneas told the Washington Post that he’s grateful for his professional relationship with his sister.

“In the alternate reality where I wasn’t involved at all, and I’d been like, just, sweating my way through, trying to have a music career for years? And then my sibling had one and I wasn’t involved at all? I think I’d be very tortured by it,” Finneas said.

“But the fact that we’ve had one in tandem makes a lot of sense.”

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