Billie Eilish makes her "SNL" debut. Photo: NBC

"Saturday Night Live" had its Season 45 premiere last night with Woody Harrelson and Billie Eilish as the musical guest. Eilish, who just announced a world tour for 2020, performed "Bad Guy" and "I Love You."

During “Bad Guy” the singer performed in a rotating room at the head of the stage that had her dancing on the ceiling.

For " I Love You," Eilish had a laid back acoustic performance with just the singer and her brother Finneas O'Connell on the guitar on stage.

Check out the performances below.

 

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