Claire Hosterman is the older sister of Disney Channel star Dove Cameron by nearly seven years. Growing up in Bainbridge Island, Washington, near Seattle, Claire and Dove shared a close-knit upbringing. Claire pursued higher education at Pitzer College, where she studied anthropology. With a strong social media presence, she has garnered over 50,000 followers on Instagram, where she shares glimpses of her life and celebrates special moments. In 2015, Claire wished Dove's boyfriend, Ryan McCartan, a happy birthday through an Instagram post, showcasing her supportive nature.