Billie Eilish Officiates Brother Finneas' Star-Studded Wedding

Singer Finneas O'Connell and actress Claudia Sulewski exchanged vows on August 29, 2026, in a private ceremony at San Ysidro Ranch in Montecito, California. The intimate gathering was attended by family, friends, and several celebrity acquaintances. Billie Eilish, Finneas's sister, had the honor of officiating the outdoor wedding, making the occasion deeply personal for the couple.

Sulewski captivated guests by wearing four unique Oscar de la Renta designs throughout the wedding festivities. Her main ceremony dress, an off-the-shoulder ball gown with a drop-waist bodice, was a particular highlight, described as demanding a moment of silence. The engagement preceding the wedding occurred on September 22, 2025, during a sunset helicopter ride, where O'Connell presented Sulewski with an antique cushion-cut diamond solitaire ring, valued at approximately USD 670,000.

Claudia Sulewski is recognized as an influencer, YouTuber, and actress, known for her YouTube channel with over 2.45 million subscribers and roles in productions like Hulu's 'The Commute.' She has also been a host for Teen Vogue and co-hosted a podcast with Finneas. She recently launched her own body care line, Cyklar, in October 2023, showcasing her entrepreneurial spirit.