Interestingly, all Miss America winners cluster around that number. With males, the figures tend to be more like .9. Going through these sorts of exercises can dramatically improve your presentation and passability. True, many women don't bother, but face it, many of us have flaws to hide that could put our gender into question, something I'd rather avoid if possible. One thing I've noticed is that many women tend to choose clothing on different criteria than a vast number of trannies.
Women often focus on comfort and hiding figure flaws.
Trans-women often choose clothing based on lifelong fantasies of what they always wanted to wear. Although I've focused on proportion, there is one absolute that, as a tall person, I would like to mention. High heels and big hair make it look worse. If you are tall, you aren't a lost cause, but I believe we tall trans-women have to work all the harder to effect a credible presentation.