12 pair of legs

Aimee Mullins was born without fibular bones, and had both of her legs amputated below the knee when she was an infant. She learned to walk on prosthetics, then to run -- competing at the national and international level as a champion sprinter, and setting world records at the 1996 Paralympics in Atlanta. At Georgetown, where she double-majored in history and diplomacy, she became the first double amputee to compete in NCAA Division 1 track and field.