Actress Liliana Mumy, one of the stars of the new comedy film "Cheaper by the Dozen," poses with her father, actor Billy Mumy, best know for his role on the "Lost In Space" television series, as they arrive for the film's premiere in Hollywood, December 14, 2003. The film also stars Steve Martin and Bonnie Hunt and opens December 25 in the United States. REUTERS/Fred Prouser FSP/HB