Billie Eilish, 19, proved she can do it all, as she pulled double duty on Saturday Night Live! As both the musical guest and host for the December 11 episode, the “Happier Than Ever” hitmaker gave her fans a real treat in front of the live 30 Rockefeller audience. With a slew of Grammys already under her belt, the real surprise from Billie came from the effortless scene-stealing she did in the sketches, none more so than a hilarious twerking nurse on TikTok.