Meet the real-life Thumbelina - the four-year-old as small as a doll, ... Despite her diet of high-calorie formula, she failed to gain weight and missed the usual milestones.

And then there’s Thumbelina, the world’s smallest horse – a miniature sorrel brown mare. In 2002 she made history with the Guinness World Records after measuring 44.5cms (17.5 in) tall.

Kids with Russell-Silver syndrome may only grow to 4 feet tall. Jan. 5, 2011 — -- Ian Earley wore preemie clothes until he was 9 months old. During potty training and beyond, he was too small ...