13 “Optical Illusion” Dresses Worn By Celebrities That Escape The Ordinary

People found these and immediately had to show somebody else.

1. Keira Knightley's Tiny Waist

Nearly 10 years ago, Keira Knightley, who was Chanel's muse at the time, appeared in a waist-whittling getup while outside the label's runway show in Paris.