Julianne Moore, 51, Shows Off Cleavage in Low-Cut Dress

Credit: Paul Morigi/WireImage.com

She nailed her portrayal of Sarah Palin in Game Change, but Julianne Moore proved she's nothing like the former Alaskan politician at the television movie's premiere in Washington, D.C. Thursday.

The actress, 51, stunned in a bright green Tom Ford cowl-neck dress with long velvet sleeves that showed off her ageless assets. She accessorized the plunging look with a gold Judith Leiber clutch, matching sandals and rocked a smoky eyes and updo.

Moore recently revealed her feelings on plastic surgery, telling More magazine: "I feel that with a few exceptions, people always look like they've had surgery; they don't look any younger. I'm 51, and no matter what I do to my face, I'm still going to be 51."