"Our Little Family" joins TLC's growing list of reality shows spotlighting people who are short in stature. Or, as the network says, individuals not from a "typical family." The Hamills -- parents Dan and Michelle, 6-year-old son Jack and 2-year-old twin daughters Cate and CeCe -- have a genetic condition called achondroplasia, a form of short-limbed dwarfism. The series details how Dan and Michelle help guide the kids to overcome physical challenges and learn to adapt to a world built for folks of average size.