Throughout her career, Billie Eilish has collaborated with a diverse range of artists, expanding her musical horizons and reaching new audiences. Notable collaborations include:
- Ariana Grande: Together, they released the hit single "Therefore I Am."
- Justin Bieber: Billie's brother Finneas co-wrote "10,000 Hours" with Justin Bieber, showcasing their shared creative chemistry.
- Rosalía: Their collaboration on "Los Ángeles" blended Billie's pop sensibilities with Rosalía's flamenco influences.
