Natalie Portman Opens Up About Singing Sia Songs in 'Vox Lux' - Watch!

Natalie Portman is opening up about her singing!

The 37-year-old Vox Lux actress made an appearance on The Tonight Show Starring Jimmy Fallon on Wednesday night (December 12).

PHOTOS: Check out the latest pics of Natalie Portman

During her appearance, Natalie and Jimmy discussed raising babies, as well as what it was like for her to transform into a viral pop star and perform songs written by Sia for the film.

In the movie, an unusual set of circumstances brings unexpected success to a pop star (Portman). Vox Lux hits theaters on December 7.

Watch her appearance below!