Sandra Bullock brought her son, Louis, to a children's Halloween party in LA on Saturday. The actress got into the holiday spirit right along with her little one, sporting an elaborate Dia de los Muertos costume — complete with festive face paint — alongside Louis, who was dressed as a skeleton. We have to say, Sandra and Louis are quickly becoming one of our favorite mother-son duos, right up there with Miranda Kerr and Flynn Bloom and Charlize Theron and her main man, Jackson. They've likely been able to spend more time together as Sandra has cooled her Gravity press tour duties, which have clearly paid off. The space drama, which Sandra stars in with George Clooney, has been number one at the box office since its release two weeks ago.