For decades, women have been trying to emulate the appearance of models in order to achieve what is often looked at as the standard of beauty. This has involved emulating facial features, breast sizes, and toned body contours. One of the newest trends has been a focus on achieving the thigh gap found among many models. A thigh gap occurs when your legs are thin enough to create a space between the upper thighs. As a result, your legs will not touch above the knees.