I never really started out with measurements, but I'm guessing being in the high 170's I must have been pushing 42". I've had three kids, but still, that's big. My measurements around 145 were something like, 36, 31, forget hips, but not that big. Now my chest and stomach are almost the same. I was thinking, man, I really got to do some pilates or something.
My step daughter said I lost in my hips. I do a lot of cross country running and started mountain biking, you would think my stomach would be somewhat smaller. My husband and I ordered belts, and I ordered the same size as him and he's 20 pounds more.
And the clothes sizing is a joke. I bought size 8 and 9 in juniors and they fit my waste. I think its the style of the jeans, but still. And there's no change in my tops. I was wearing 10/12 before.
Maybe I should eat less carb? I have cut back on alcohol and I am trying to quit. I do tend to crave sugar. My overall calories are 1700 to 2000 a day, and I know I have to bring that number down, but I am active.

) and I no longer drink anything mixed with soda (even diet soda). When I was first getting rolling on the cutback, I tried picking things I'm not terribly crazy about (like Scotch) so I would sip it more slowly and have fewer in the course of an evening. Then, the really big thing, I made a hard and fast rule that I stick with no matter what - for every "adult beverage" I have, I MUST finish 8 oz of water before I can order another. So far seems to working out OK as long as I make sure I have the alcohol planned into my menu so I don't go over my calories.
) and I tend to lose elsewhere instead of my middle. I just took my measurements again today and although I've lost 2 1/2 inches in my waist I've lost 4 inches off my hips. I'm hoping as my weight decreases and my exercise and all increases that maybe I'll get my waist back down to what it used to be - 30 inches. Geesh, and I used to think that was huge!
Stick w/it and as you lose the fat it will come off your middle. 
Just wanted to point out that all of these "should" measurements are averages--or just someone's concept of "ideal." "Individual results may vary." 