Billie Eilish won a lot of important music awards when she was just starting out.
Her song "Ocean Eyes" helped her become famous in 2015.
She didn't go to a regular school. She was taught at home, which let her focus on her music.
Billie has a special thing called synesthesia, which makes her see colors when she hears music.
She's known for wearing big clothes to show that people don't need to judge others based on their bodies.
Billie sang the theme song for a James Bond movie called "No Time to Die."
She speaks up for important causes like the environment and mental health.
Billie doesn't eat animal products and is a vegan.
She has a condition called Tourette Syndrome, which she talks about to help others understand it.
Billie and her brother were on the TV show "Phineas and Ferb" before she became really famous.