Billie Eilish had a special role in her brother Finneas O'Connell's wedding to Claudia Sulewski. The newlyweds both wanted Eilish to stand beside them during the wedding ceremony. Instead, they found another important way to include her in their big day. Eilish officiated the couple's wedding ceremony in Montecito, California.
Sulewski shared details about the wedding in a YouTube video released Wednesday, Sept. 9. The first person they called when they began planning was Finneas' sister Billie, she said. Finneas wanted Eilish as his best man, while Sulewski wanted her as her maid of honor. "So we thought, 'Okay, sounds like she needs to marry us,' " Sulewski said.
Sulewski became emotional while talking about Eilish's role in the ceremony. "And truly, officiating our wedding was, like, the greatest gift she could ever give us," she said. Sulewski, 30, married O'Connell, 29, during an outdoor ceremony on Saturday, Aug. 29. The couple chose not to have bridesmaids or groomsmen because they wanted to "keep the experience intimate," according to Vogue.
Several well-known guests came to Montecito for the celebration. Justin and Hailey Bieber, Kristen Bell, Dax Shepard, Jason Sudeikis, Nina Dobrev, Emma Chamberlain, Rachel Sennott, and Stassie Karanikolaou attended. Eilish's boyfriend, Nat Wolff, was also invited. Eilish performed "Birds of a Feather" during the reception.
Eilish also supported Sulewski before the wedding during her final dress fitting at Oscar de la Renta's Beverly Hills boutique. She joined Sulewski through FaceTime and reacted to the dress with excitement.

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