Braving the bone-chilling cold of New York City this weekend, Angelina Jolie and Brad Pitt took their eldest four kids to see a production of 'Mary Poppins' on Broadway. One-year-old twins Knox and Vivienne, presumably too young for the weather and the venue, stayed at home. The entire family is enjoying New York while Jolie finishes shooting 'Salt,' and Maddox, Zahara, Pax, and Shiloh reaped the benefits of the Great White Way on Sunday afternoon.