Which of American Horror Story's Freaks Are Based on Real Circus Acts?

There's just something about watching someone bend themselves in half that makes it impossible to look away. In circus performances, they might squeeze themselves into tiny boxes or perform death-defying feats of balance. This Cirque Medrano performer posed for this picture in 1938, and you can still find acts like this in the modern day, performing in venues like Cirque du Soleil.