Since the debut of their hit TLC reality series, Little People, Big World
, Matt and Amy Roloff and their kids, Jeremy, Zach, Molly and Jacob, have become one of the most well-known families in America. Twins Jeremy and Zach
are the oldest of the Roloffs' four children, but they aren't identical. They were born only two seconds apart, but now, Zach and Jeremy are nearly two feet apart in height. Of the four Roloff children, Zach is the only little person.
"It's fun," Zach said during a 2006 Oprah Show
appearance. "We go through the same experiences as we grow up, but we experience [them in] different ways."