Like others said, it really, really depends.
Just to give you an example...
During the lower 190's I lost A LOT of inches around my Bust/Waist/Hips and went down a pant size within a few pounds.
I'm now in the mid-180's and have since lost pretty much nothing from my B/W/H but have lost waist around my arms/thighs.
Somehow my body has a program for weight loss and apparently it was best for my body to go B/W/H and then arms/thighs. Who knows what will happen next!
ETA: You might want to look in different brands too for a better fight. I wear between a 10-12. I have some 12's that fall right off me and another one that fits well on the butt/thighs but still cuts into my waist some. They're two different brands and are cut very differently.