Sarah Silverman flashed some major cleavage at the premiere of her new film "I Smile Back" in a black, plunging v-neckline dress.

Silverman takes a rare dramatic turn in Adam Salky's film about a dedicated wife and mother struggling with depression and addiction. She walked the red carpet solo and changed into a snake-skin patterned dress for the after party in Los Angeles.

The 40-year-old comedian has been taking greater risks on the red carpet lately, wearing a similarly revealing dress from the Marni to the 2014 Emmy Awards. It's a far cry from her usual wardrobe of jeans and zipped hoodies.

"I wore nothing but hoodies and jeans for the majority of my life, but when you turn 40 that becomes less cute," Silverman wrote for Harper's Bazaar in June 2014. "I'm still a slob most of the time, but I do love fashion, and I've grown to appreciate it more - especially people who it really well. In my old age I'm finally getting it."

Silverman recently starred in the film "Ashby" and Showtime's "Masters of Sex," which stars her boyfriend Michael Sheen.