Finneas O’Connell, a Grammy and Oscar-winning musician and producer known as Billie Eilish’s brother, and Claudia Sulewski, a content creator, actress and skincare entrepreneur, exchanged vows on Saturday in Montecito, California. The ceremony took place surrounded by family and close friends, according to reporting by Vogue.
The couple’s relationship began in 2018 when they connected through a dating application. O’Connell has previously indicated that he recognized the significance of their connection early on, composing a song titled “Claudia” during their first night together. His 2022 musical composition “Mona Lisa, Mona Lisa” was also inspired by Sulewski. The pair advanced their relationship to engagement in September 2025, when O’Connell orchestrated a sunset proposal featuring the date “9.22” in their announcement to the public.
During a recent television appearance on The Tonight Show Starring Jimmy Fallon, O’Connell discussed the proposal process and acknowledged the difficulty of maintaining secrecy beforehand. He described the experience of keeping the surprise as emotionally taxing despite its joyful nature, comparing the challenge to activities requiring deception.
While neither party has publicly disclosed comprehensive information regarding their wedding celebration, Vogue documented that Sulewski wore four distinct ensembles across the wedding weekend. All garments were designed by Oscar de la Renta and included attire for the rehearsal dinner, the ceremony itself, the reception festivities, and an afterparty event.
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