So for perspective, I thought a shorty like myself (5'4") could add my measurements.
180 - 190, Size 16
170 - 180, Size 14
155 - 170, Size 12
<155, Size 10
I haven't been below 155 since high school, but curiously enough, in high school I wore size 12's at that weight. I'm only 22 now. My jeans brands have been Old Navy, Express, and American Eagle.
Anyway, with all you tall ladies' numbers, I thought it was curious that my dress sizes were comparable.