Reese Witherspoon hopped out of her car while chatting on the phone yesterday. She was headed into the Montage Hotel in Beverly Hills to attend a business meeting wearing a bright blue dress and blazer. Reese has been juggling work obligations with motherhood since the September birth of her son, Tennessee. She ran errands with baby Tennessee last week, but more recently has been focused on a new project. Reese is set to be a producer on the film adaptation of the novel Gone Girl, and she spoke to The Hollywood Reporter about author Gillian Flynn and what drew her to the book. Reese said, "You really can't anticipate where it's going, but it's one of those books you can't stop reading."