Billie Eilish Makes 'SNL' Debut With 'Bad Guy' & 'I Love You' - Watch!

Billie Eilish is defying gravity!

The 17-year-old singer made her Saturday Night Live debut on Saturday (September 28).

PHOTOS: Check out the latest pics of Billie Eilish

Billie performed her Billboard Hot 100 smash hit “Bad Guy,” as well as her When We All Fall Asleep, Where Do We Go? album track “I Love You” during the show. During “Bad Guy,” Billie performed inside of a rotating room that provided the effect of her climbing the walls!

Billie was accompanied by her brother Finneas during her performance of “I Love You.”

Watch Billie‘s performances inside…