In the spirit of New York Fashion Week, staring at the perfect postured models walking up and down the runways got us thinking.

Just how do you get perfect posture? What's the secret? What are the bad habits? And of course, which celebs have the best and worst postures in Tinseltown?

We decided to tap Dr. Kenneth Hansraj, spine specialist and author of Keys to an Amazing Life: Secrets of the Cervical Spine, to get the 411 on how to walk every sidewalk like a model on the catwalk. Check out what he had to tell us:

Most of our work, sports and personal world is spent in the forward posture position and people without training are not aware that they are increasing the forces about their neck and back.

It does not matter how fashionable your outfit is, or what size your wear, if your head is down and shoulders are rounded forward you will not look your best!

Check out Part 2 of our interview with Dr. Hansraj where he gives tips for better posture and the celebs with the best and worst posture!