It Takes Two (1995)
Identical 9-year-olds from very different backgrounds: orphaned Amanda and wealthy Alyssa meet at summer camp and decide to switch places -- and play matchmaker between Alyssa's dad, Roger, and the kind social worker who cares for Amanda.
Director: Andy Tennant · Cast: Kirstie Alley, Steve Guttenberg, Mary-Kate Olsen, Ashley Olsen, Philip Bosco, Jane Sibbett