Billie Eilish took on the role of officiant for her brother Finneas O’Connell and Claudia Sulewski’s wedding at San Ysidro Ranch in Santa Barbara, California.
The private ceremony featured a star-studded guest list, including Justin and Hailey Bieber, Emma Chamberlain, Rachel Sennott, Rebecca Black, Jason Sudeikis, Kristen Bell, Dax Shepard, Devon Lee Carlson, Stassie Karanikolaou, and Jesse Jo Stark, according to TMZ.
Eilish had previously revealed that she would be officiating the wedding, teasing the role as early as May. She arrived at the celebration with Nat Wolff.
Sulewski, an actress and content creator, wore four different Oscar de la Renta outfits throughout the wedding weekend, with separate looks for the rehearsal dinner, ceremony, first dance and reception, and after-party.
The couple’s dogs, Peaches and Moose, were also part of the celebration, while Finneas’ parents, Maggie Baird and Patrick O’Connell, attended to watch their son exchange vows.
The Grammy-winning musician and producer proposed to Sulewski on Sept. 22, 2025, after seven years of dating. She celebrated the engagement with the caption, “forever and ever 9.22.”
The couple began searching for a wedding venue in January and later marked their upcoming marriage with a joint co-ed bachelor and bachelorette trip in Cabo San Lucas.
