So I measure my waist to be 37.5", and the lowest EVER that I've measured it was 34.5" (when I was 147.2lbs).
Now no matter where I check, I find that a waist measurement of 37.5" means a pant size of about 18-20. And a 34.5" would be a size 16-18.
Ummmm, no
not even CLOSE!At 37.5" I'm wearing a very loose pair of 14's (though 12's are just a smidge too tight) and when I was 34.5" I was more than comfortable in my 12's. My hip measurements also overestimate my recommended sizes, but not as badly as my waist.
So... A question for the shorties: Do you usually wear pants smaller than what's "recommended" for your measurements? Or am I just doing this wrong? I am looking at both petite sizes and normal ones.
In the same token, I guess I can ask you tall girls: Are your sizes underestimated as mine are overestimated?
And for everyone: How do sizes work out for you? Do you find them rather accurate, or a bit off? Do you think I could be measuring wrong? When you measure your waist, do you inhale, try and make your belly as big as possible, or try to relax and measure it wherever it lands?

I always went by natural waist, because that is what I was told at some point in the last year. When I was at my lowest, in June/July 171.6, I was able to fit in 12's (a bit tight tough). My measurements were 29 natural waist and 39 hips (biggest part). My hips will always be that much bigger since having kids.
I just checked on Walmart's site for their size chart and it says I should've been between 10 and 12, which 12's were tight as I said. 14's were nice and loose.
So it was only a bit off, not as bad as what you are experiencing! Everyone is different and all body shapes will contribute to different sizes. Right now I don't even measure and I probably won't measure again until a good while after I have my baby, I'm 6 months pregnant right now. So sizes are waaaay off.
Keep them coming!