Sarah Silverman attended the Los Angeles premiere of her new film, "I Smile Back" at the Arclight Cinemas in Hollywood last night, where the 44-year-old comedian made quite the impression in a form fitting black dress with a seriously plunging neckline. The Wreck-It Ralph star teamed her eye-catching ensemble with a pair of pointed-toe black pumps, a sparkly clutch and diamond jewelry, letting her girls do all the talking as she flaunted her crazy cleavage.