Finneas O’Connell and Claudia Sulewski are officially married!The Grammy-winning musician tied the knot with actress and Cyklar skincare founder Claudia Sulewski on Saturday in Montecito, California, surrounded by family and friends.Photos from the ceremony were posted online. The images show sister Billie Eilish in a stunning green gown, officiating the ceremony. Finneas and Sulewski’s dogs, Peaches and Moose, also played a part in the celebrations, while his parents, Maggie Baird and Patrick O’Connell, were present to watch their son exchange vows.According to Vogue, the bride wore four Oscar de la Renta looks across the wedding weekend, including outfits for the rehearsal dinner, ceremony, first dance and reception, as well as the after-party.The couple’s wedding was attended by several celebrity friends, with Justin Bieber and Hailey Bieber, Rachel Sennott, Emma Chamberlain, Rebecca Black, Jason Sudeikis, Kristen Bell, Dax Shepard, Devon Lee Carlson and Stassie Karanikolaou among those who joined the celebrations.Billie attended alongside actor Nat Wolff, with the pair reportedly staying close throughout the festivities.Finneas and Sulewski’s relationship began in 2018 after they met on a dating app. Finneas previously told BuzzFeed that he wrote his song ‘Claudia’ on the first night they spent together. He also drew inspiration from Sulewski for his 2022 song ‘Mona Lisa, Mona Lisa’.After several years together, the couple announced their engagement in September 2025. Finneas proposed during a romantic sunset moment, with the pair sharing the news in a joint Instagram post captioned, ‘Forever and ever 9.22’.