[prof41]

I have some underwear, several of the same type, that I wear for measurements. I take one measurement at the top of the elastic band of my underwear that lands a couple inches below my belly button, and then another measurement on the lower part of the underwear (the leg part of the underwear if you will) which measures more of my hips and butt.

I take the measurement every week and put on the same type of underwear, so I know I'm fairly consistent.