Something about her ....back!

Throughout time, the focus of what constitutes as "sexy" has constantly changed.

 Fashion seems to highlight a different feature each season. That is why some seasons we see the midriff, then it's the shoulders, or why short skirts are hot and then it changes to long.

A constant focus is the back.

It is subtle yet seductive. Elegant and simple, the designs are often very interesting.

Clockwise from the top: Balenciaga, Jay Ahr, Street Style, A.L.C, Street style

Photos: Style.com, Who What Wear