Screen Actors Guild Awards 2013

SAG 2013 Style: Sexy & They Know It

The evening's must-have accessory? For Michelle Dockery, Jessica Chastain and these other sultry stars, it was décolletage, which was put on (nearly) full display on the red carpet

JAIMIE ALEXANDER

Our jaws dropped when we saw this black Marc Bouwer gown head on, but as soon as the actress (and Peter Facinelli's new girlfriend) turned to the side, they became completely unhinged.