Even though she is only 17 years old, she is currently one of the most sought-after musicians.

Horror Night: On Sunday, Billie Eilish stepped out with her family and some friends for the Halloween Horror Nights at Universal Studios

Mystery friend: Billie clung to her friend as the two walked with the group to their next ride

Additionally, Billie Eilish went out on Sunday for Universal Studios’ Halloween Horror Nights with her family and a few friends.

The singer of Bad Guy was spotted with their mother Maggie Baird, two other pals, and her 22-year-old brother Finneas and his girlfriend Claudia Sulewski.

Billie hugged her friend tightly and put her arms around her as they strolled through the park and made their way to the Jurassic World rollercoaster.

Billie rode up front with her mother and a friend as they got ready to get wet as the group boarded the water ride with their ponchos.

Billie maintained a laid-back vibe with her distinctive green-rooted hairstyle, thigh-high black boots, and baggy clothes.

However, Billie is not the only member of the family becoming well-known. 

Billie’s brother Finneas assisted in producing Selena Gomez’s recent breakup ballad, “Lose You To Love Me,” which is about her previous relationship with Justin Bieber. The song was released last week.

“It was really awesome to collaborate with him.” She remarked, “It actually kind of happened last minute,” on SiriusXM’s Hits 1, which is hosted by Tony Fly and Symon.

As we were wrapping up the song, they played it for him. He and Billie are signed to the same label. “Hey, do you think you can add something to it?” they said. And he said, “Absolutely,” with such kindness.

The vocalist of Love You Like a Love Song said, “He just added that final touch, and it really made a difference, from the second chorus to what he did in the bridge.” 

“It was truly amazing.”