Online Shopping for Jeans

Is it really that difficult to make jeans that fit the women with a bit of junk in the trunk. I'm a dress size 4 but can't fit a size 4 jean. More like size 6 or 7. And even then, I have to use an industrial strength belt to close the 3 inch gap at my back because my waist is too small for the pants. I'm just saying, my boy Marc Jacobs, Karl and the D&G boys should give the sistas a little consideration.