While we're more used to seeing the actress sport swept back updos and tumbling curls, the super sleek bob looked lovely on the star. She wore the perfect dress to compliment the sophisticated straight style, paired with some amazing shoes too - a chic, shift and studded peep-toe Louboutins.
How do you rate Jessica's new crop? Better or worse than Scarlett and Keira's wavy version? She might have competed in our best new celebrity hair cut of the year competition if she had gone for the chop a few days earlier! Let us know what you think in a comment below.