Female sizes e.g. 4,6,8, if they ever had any relationship to body size was lost decades ago.  Mostly all you can say is 8 is bigger than 4. 5,7,9 seem more lumpy.  While women's sizes are more tent-like. The measurements published in inches that still have no relation at all to the circumference of one's body is somewhat new.  Although they've been fucking around with "lumpiness" for a long long time.  Eventually everyone will just wear a tent - complete with velcro closure to relieve bodily functions.  Sort of like Wall-e.