Lookin' good, Sarah Silverman!

Last evening, the 44-year-old actress hit the red carpet at the LA premiere of her new movie, I Smile Back — and donned a stunning gown with quite the plunging neckline for the occasion!

sarah silverman

Sarah at the I Smile Back premiere on Wednesday, Oct. 21, 2015.

At the special event, Sarah — who plays a wife and mother with a seemingly happy life but is secretly suffering from depression, unresolved childhood issues and destructive behavior in the film — showed off her ample cleavage in a simple black spaghetti strap dress. She accessorized the look with a pair of matching black pumps and a coordinating silver sequined clutch.

RELATED: "I Still Have Downward Spirals" — Sarah Silverman Talks Battling Depression

I Smile Back will be released in a limited number of theaters on Oct. 23.

Click through the gallery below to see more photos of Sarah at the premiere!