They are geometrical forms which are said to act as a template from which all life springs. They are named after the ancient Greek philosopher Plato. To the Greeks, these solids symbolized fire, earth, air, spirit (or ether) and water.
This was a big thing with the Valentino show. The show was focused around romantic braids. This is just a french braid that starts in the middle of the crown and then wraps around your head in a counter-clockwise rotation.