Katie Holmes held Suri's hand as they walked to school in NYC this morning. Katie later met up with a friend and had a laughing fit as she headed into a waiting car. She was off to rehearsals for her Broadway show, Dead Accounts, which opens next month. Katie's been juggling her stage role with motherhood and has been taking the subway from her apartment to the theater district for work. She broke from acting over the weekend to spend time at a park with Suri, who chatted on her cell phone during the outing.