[@DarkwolfX37] You were already using breasts as an example of measurements your were trying to figure out. I just expanded on it. :) 

But yeah, the vast majority of the time, or at least I find it to be, nobody really cares about what the exact numbers are when it comes to writing.

I like to use the Height Principle. Is it really important that we know a character is 6'4", or could you just as easily say "tall" and let us paint the picture for ourselves?