On Saturday Night Live, Billie Eilish appeared as a musical guest in disguise.

The singer arrived in New York for the show’s afterparty, practically unrecognizable as she attempted to keep a low profile.

The hitmaker will turn 22 on Monday.

SNL alum Kate McKinnon welcomed the hitmaker back to her old haunting ground for the first time since her departure in 2022 on the final episode of 2023.

The What Was I Made For singer looked cozy with an oversized red, black, and white coat and a black, red, and white athletic sweater with the number 52 embroidered on it.

The Grammy winner wore white sneakers with wide-leg denim.

Billie wore a black-billed hat with a crimson star over her shoulder-length dark hair.

The Ocean Eyes artist wore silver dangling earrings and square sunglasses.

The Oscar winner shared photographs of two promotional posters for her Instagram Stories presence. On one, she wrote, ‘Peak Life Experience, Thank You,’ and signed her name.

‘I aged 5 years this week (it’s okay tho) Nothing will ever beat this. I wanna do it all again!!!,’ I wrote on the other.

Greta Gerwig, the director of Kate for Barbie, introduced Billie to the world with two songs: the Barbie smash What Was I Made For and Have Yourself a Merry Little Christmas.

The Lovely singer winner celebrated the episode’s victory alongside Claudia Sulewski, Questlove, Phoebe Bridgers, Jon Hamm, and his wife Anna Osceola.