Her Saturday Night Live gig marked the first time the singer pulled double duty on the show.

Hosting NBC’sSaturday Night Livecan be nerve-wracking for anyone even a Grammy-winning superstar likeBillie Eilish.

“Preparing forSNLwas f—ing nuts, dude.

Saturday Night Live

BIllie Eilish hosting “Saturday Night Live.".Will Heath/NBC

It was literally alien,” Eilish revealed toHoward Sternwhile visiting his SiriusXM show and recounting herrecent experience.

“I cried every single day of the week.

No joke at all.”

Saturday Night Live

Billie Eilish and Kate McKinnon on ‘Saturday Night Live.'.Will Heath/NBC

“It’s like, it’sSNL…

These amazingly talented actors are surrounding a table where, somehow, I’m the main course.”

Eilish admitted that a lot of her worries came from stepping into a world of seasoned professionals.

It was relieving,” she said.

This is just for fun.'"

Performing her monologue as “Sexy Mrs. InvitingKate McKinnonover for Christmas dinner?

Mugging with McKinnon and Aidy Bryant in a corporate hotel ad spoof?

Yeah, we’d say Eilish looked like she had fun.

Watch Eilish’s interview with Stern below.