Sarah Jessica Parker stepped out of her NYC home this afternoon with her two little girls, Tabitha and Marion. The mother of three had her hands full as she and a nanny brought the twins out for some shopping at their local Dean & Deluca and the health food store LifeThyme. SJP had the day off from shooting on her new movie I Don't Know How She Does It, which she was recently up in Boston filming alongside costar Christina Hendricks. She started working on the big-screen version of Allison Pearson's novel back in January, but SJP has still had time for family and fashion adventures. Her next project, The Ivy Chronicles, is one in which she'll both appear and act as a producer. She'll also once again team up with The Devil Wears Prada screenwriter Aline Brosh McKenna, who worked on the adaptation of Pearson's book too.