Before there were run ways and supermodels and before there were photo shoots and magazine spreads we had one of the most modern forms of art in what we called nude portraits. This is still even seen today in the most extreme forms of pornography, which as debatable as it may be because it’s considered to be degrading to women is a form of art. Then we have the more modern forms that are depicted in the forms of swimsuit modeling or in runway modeling. Taking all aspects they share a commonality and that is form and function using the human body.
Often unnoticed because most are viewing the subject matter than the overall piece of work in its entirety but most if not all modeling begins using a variation of what is known in the art world as the “Classic Venus Pose”. This is known when the subject of the painting has one arm bent over the head and the legs flexed forward. This was seen in the work of art known as the “Blue Nude” by famous nineteenth century artist Henry Matisse. 
Notice the positions that indicate the “Classic Venus Pose”. I also would like to point out something that is very seldomely found in today’s modeling and that is how voluptuous this particular model was. This was something that wasn’t uncommon for many artist and sculptures of the time period and before to have voluptuous women as there subject matter. If you were to turn the page to the 21st century you would find the complete opposite. There are less and less of what once was to what are now slim petite models. Everything on the market is aimed at dieting and keeping thin or enhancing parts of your body. But what it seems we as society haven’t figured out yet is that no one person is a like and we can’t all have the thin, slim structure nor can we all be heavier in structure or have those enhanced parts of the anatomy that a lot of people seem to lust for. Where the timetable turned I don’t even think we know but we as humans seem to follow what is the here and now.
Here you notice the “Classic Venus Pose” and as well as the form and function of what portrait taking and Art in this form has evolved too. Its ironic but not uncommon to see something that was used centuries ago again used today. I just used art and a minute aspect of it in modeling and portraits as an example. Film and music are just a few other forms this can be found in. It’ll be interesting to see if one were to fast forward centuries from now and find the things that we use today or even times ago make their way back to the surface where they once were in their prime. As they say history does repeat itself.