I have always liked Jessica Chastian's style. With the exception of the white (sleeveless polo necked) Givenchy she wore to the Golden Globes last time, she has barely put a foot wrong for the past two years. An amazing feat of good taste and great stylist. And this week was no exception when she stepped out to promote her latest movie wearing a glorious black vintage YSL dress with gigantic frill and bow. She paired it cleverly with a bunch of fun coloured beads on her wrist, on-trend nails in turquoise and those YSL Tribute shoes that will never go out of style. Good girl. Youthful and chic all at once. Done.